Ball Mill Control Theory and Application

Note: Cross posted from sbmzhcn.

Permalink: http://sbmzhcn.appspot.com/2010/09/1/265001.html

1 The principle of automatic control system for milling process overview

Automatic control of the ball grinding mill powder size of purpose is to control the ball mill, the possible to improve the quality of products of powder. Using the computer control system of the grinding technology can improve the productivity, improve the control accuracy.

1.1 The principle and operating characteristics of ball mill

Usually the ball within a ball. Wall lining has wavy manganese steel armor of cylinder. Cylinder side as raw materials imported and wind blowing on the other side of the import, export for gas mixture of powder. The motor and reducer cylinder rotate speed, turning device with centrifugal and polishing in under the action of forces, armor will ball and raw material up to a certain height. Then use gravity free fall. Raw materials are mainly ball shatter, but also affected by steel ball and armor between, between the extrusion and grinding. A good FenZi grinding materials, mixing system into the next procedure. For running after a ball. Noise signal, the population pressure difference and relationship between output (see figure 1)

When the ball when the increase in quantity. The increasing power of ball mill, but until the noise signals, basically is found by large slope down. With the increasing of quantity of ball mill, export differential pressure also slightly increased. When feed greater depth. Differential pressure is rising sharply.

According to the curves shown in figure 1 characteristics can be seen. The noise signal is ball mill can reflect the quantity of materials. In the ball speed constant, the ball is a certain period, by measuring the grinding machine, the noise signal can be directly within the ball mill detection of materials. Therefore, the stability of the grinding machine for shoes. Control air purging, make their relationship, it can control the equilibrium of the grinding mill.

1.2 Difficult to control the ball milling

1) from its existing mill run characteristics. Noise is a variation of parameters, it is significant for mill materials. But because the ball inside the operating conditions of complex and measurement methods have greater error. So the control scheme in composition may have some limitations.

2) the grinding mill control system is more people, more than the output variables and strong coupling, large inertia, large delay of time-varying system. Using common PID control force lacerates the relationship between the variables. Not only get better effect, but also is caused extremely easily system stability.

3) the grinding ball control, except for shoes, accused of parameters for air outside disturbance. Also, the grain size ball and the effect of water content.

2 Grinding process is sub

General grinding system operating first kind is to use of ball mill for export pressure difference control parameters, the second kind is to use manual operation. Depend on the experience, the operator control over two methods, the existing control precision grinding low volatility of particle size, quality and yield of grinding is difficult to control. The quality of products.
Two of the automatic control system

Control system is composed of two parts, hardware and software are introduced as follows:

2.1 control system software

The software is used to control strategy of human-simulated intelligent control scheme. It is based on the principle of intelligent control, imitation of man's thinking on intelligent decoupling, ball mill in order to ensure the safe and reliable operation, the software is the core logic by intelligent controller and intelligent algorithm.

Intelligent design according to the logic is running the operation experience, according to the input error and its variation formulate corresponding control strategy, the principle is: (1) the noise signals according to the ball, adjusting control of disc feeder under shoes. Make quantity to achieve stability.

(2) adjust air control two loop baffle, its balance. Intelligent algorithm according to the ball mill system controller is the coupling, the controller can be divided into three sons, each loop circuits using intelligent algorithm based on the input, and the changes of choose corresponding algorithm and achieve the purpose of humanoid control.

2.2 control system of the hardware

Control system hardware consists of: PLC and computer, isolation and transducers, inverter, noise and transform device, flowmeter, electric baffle valves, electric butterfly valve, pressure transmitter such equipment. A new form of the control system can fully test the key parameters of grinding process, through these parameters to PI C and computer provide enough information to control system, comprehensive treatment, and to form a correct judgment, provide accurate control signal, make grinding system according to the requirements of control in advance to work.

Types of crushers-jaw crusher machine

Jaw crusher  is a widely used stone crusher. jaw crushers are configured for primary crushing of even hardest rock. Our jaw crushers are crushing without rubbing minimum dust oil lubrication, devise having oil or grease lubrication system. SBM crushers are designed for long life service with minimum maintenance for hard, tough, abrasive material and overload high capacity. This service goal has been confirmed by our customers all over the world.

A jaw or toggle crusher consists of a set of vertical jaws, one jaw being fixed and the other being moved back and forth relative to it by a cam or pitman mechanism. The jaws are farther apart at the top than at the bottom, forming a tapered chute so that the material is crushed progressively smaller and smaller as it travels downward until it is small enough to escape from the bottom opening. The movement of the jaw can be quite small, since complete crushing is not performed in one stroke. The inertia required to crush the material is provided by a weighted flywheel that moves a shaft creating an eccentric motion that causes the closing of the gap.

Single and double toggle jaw crusher are constructed of heavy duty fabricated plate frames with reinforcing ribs throughout. The crushers components are of high strength design to accept high power draw. Manganese steel is used for both fixed and movable jaw faces. Heavy flywheels allow crushing peaks on tough materials. Double Toggle jaw crushers may feature hydraulic toggle adjusting mechanisms.

Flexible discharge opening setting of jaw crusher allows perfect match with relative equipments.  jaw crusher is easy to install, operate and maintain. As per Feedback, our experts will make continuous improvements on our products to meet customers' changing needs. Jaw crusher is widely used in fields of mining, metallurgy, construction, smelting, hydropower and chemical industries etc.
Features:
1. The application of world-class manufacturing processes and high-tech materials.
2. Integrated steel structures are used for the base of bearing;
3. The broken cavity using "V"-shaped structure, so that the actual width of feed is same as nominal width;
4. The broken cavity is deep and without dead zone, increased capacity and output feed;
5. Lubrication system is safe and reliable, convenient of replace parts, easy to maintenance;
6. The outlet employs pad-style adjustment devices, convenient and reliable, and increase the flexibility of the equipment;
7. Low noise, less dust;

What is a vertical roller mill

Vertical roller mill ( grinding ) is the dawn of Heavy Industry and Technology to address the industrial mill output is low, energy consumption and higher technical problems, absorb advanced technologies combined with our years of design and manufacture of advanced mill concept and market demand, after years of concentrated design improved Large grinding equipment . Vertical roller mill using reasonable and reliable structural design, with advanced technological process, set drying, grinding, powder selection, improve the integration, especially in the large grinding process, can meet customer demand, the major technical, economic indicators reached the international advanced Level .

Vertical roller mill applications

• Special glass fiber industry ‘s largest high yield pyrophyllite powder fineness of grinding ;
• Private coal gangue powder industry powder produced a large output ;
• Special chemical industry raw materials, high production of various chemical powder production;
• Non-metallic mineral industry, a variety of low, medium and high hardness of the hundreds of species of large-scale ore powder production preparation;
• Hundreds of species of other big industry production of a variety of materials, powder preparation;

Vertical roller mill Features:

• operating costs low:
  1. mill efficiency, vertical roller mill with roller compacted ground and feed bed materials, low energy consumption, milling system power consumption 40-50% lower than the milling system, and with the increased humidity of raw materials, section Electric effect is more significant.
  2. metal loss, liner and roller with a special material, long life, reduced operating costs, high utilization ;
  3. into the grinding material particle size of up to roller diameter of about 5%, usually 40 ~ 100 mm, it can be saved two medium-sized vertical mill grinding.
• construction costs low:
  1. The grinding process is simple, and milling system can be reduced compared to an area of about 50%, reduced by about 70% of construction costs, building size, occupy less space .
  2. set of broken grinding, drying, grinding, grading conveyor in one, the system is simple, compact . Can open layout, making low-cost construction .
• easy and reliable operation :
  1. with a control device, can realize remote control, easy to operate .
  2. The roller cover and the disc has to prevent direct contact liner quality control device, to avoid fragmentation of severe vibration .
• drying ability, vertical mill using air transportation of materials, the grinding of materials for large water inlet temperature can be controlled so that products reach the final water, drying in the grinding of water up to within 12 to 15 % of the material, even drying Dry milling, drying only water for 3 to 4 % of the material .
• stable quality, uniform particle size distribution . Material in the mill residence time is short, easy-to- size and chemical composition of the product testing and control, product quality and stability .
• easy maintenance, through the maintenance tank, turn rotating arm, roller, liner can be replaced in a very short time .
• environmental protection, energy saving ; vibration, low noise, low dust, clean operating environment to meet the requirements of environmental protection .

Source Article:http://sbmzhcn.appspot.com/2010/08/31/245002.html

ball milling machine how to use

A ball mill is used to grind solid materials into powders. It's commonly used to make paints and ceramics. It rotates on a horizontal axis and uses iron or stainless steel balls to crush materials into powder. With a container and a power drill, you can quickly make your own ball mill.

first，Installation Ball Mill
      The quality of ball mill installation quality, the ability of mill is the key to normal work. Various types of ball mill installation method and sequence similar. To ensure the smooth functioning of ball mill and reducing the harm to the buildings, it must be installed in its weight of 2.5 to 3 times the reinforced concrete foundation.

      Installation ball mill, the first should be installed main bearing. In order to avoid aggravating the problem of the hollow crankshaft bearings lining and shoulder wear, the two main bearing the base plate of elevation difference in the length of each meter should not more than 0.25 mm. Secondly, the installation of the ball mill cylinder of the light of the specific conditions, can be pre-assembled the entire English Department loaded directly, but also can be divided into several parts of the installation, adjustment and should check with the centerline Journal and the ball mill, the error must ensure that its Concentric within per meter in length should be less than 0.25 mm. The final installation of the transmission components (small gear, uranium, coupling, reducer, motor, etc.) During installation, product technical standards should be measured and adjusted. Gear check the radial pendulum poor and small gear meshing performance; gear reducer and small concentric degrees, and the motor and reducer concentric degrees. When fully installed are in line with requests, we can not go on the basis of bolt main bearing floor and the last watering.

Second, Operation and maintenance of ball mill

    If the ball machine running high rate of grinding effect, and to strictly abide by the operation and maintenance of order. Starting in the ball mill, should check whether the tightening bolt connections; gears, coupling, etc., as well as the keys to the first mine-spoon Solid tight situation.

    Check the oil tank reducer and the adequacy of the lubricating device and instrumentation whether illnesses, pipes unimpeded. Check ball mill with classifier equipment availability impede functioning of the surrounding debris, and then use the cable car to the ball mill-week, the ball loose tube Dutch and ores, and to inspect the ring gear and pinion meshing, there abnormal sounds. The start order is first activated ball mill lubricants pump, when the hydraulic reach 1.5 to 2.0 kg / cm 2 o'clock, the ball mill will be allowed start again start classifier. Everything is running normally, and so on, can begin to draw mine. In operation process, should always pay attention to bearing temperature should not exceed 50 ~ 65 ° C. The attention to the regular motor, voltage, current, temperature, audio, and so on. Attention lubrication system at any time, the oil tank should not exceed 35 ~ 40 ° c, to tubing pressure should be maintained at 1.5 to 2.0 kg / cm 2. Check size gear, the main bearings, such as grading machine transmission components reducer lubrication, and attention to the observation before and after the ball mill Cover, Simplified and exclusive ore bins overflow tank and machine classification back to the trough of sand plug the leak and sand. Regular attention to the changing nature of ore, according to the situation promptly and take appropriate measures.

     Stop ball mill, the first stop to the mining machine, within the ore processing to be simplified after the end of ball mill motor to stop, the last stop pumps. With the upgrade installations classifier to the spiral of sand, and then stop classifier.

Crusher working principle and advantages of an overview analysis

Note: Cross posted from sbmzhcn.

Permalink: http://sbmzhcn.appspot.com/2010/08/30/235002.html

I. Impact Crusher  Work The name suggests, Impact Crusher is used to achieve the crushing effect of counter-masterpiece, and in large materials into the counter board and after the crushing chamber between the rotor by rotation of the rotor part of the role of access to kinetic energy in the counter plate and the rotor repeatedly between the impact of each of the two first-class counter-cavity, the second-level counter chamber and the bottom of the grinding chamber of progressively broken, meet the requirements of the expected size.

II crusher  hammer crusher compared with the technological advantages of
1. Able to handle large moisture content of materials, to prevent clogging crusher
Excessive water in the processing of materials, the impact crusher the feed chute and the counter plate can be equipped with heating devices to prevent the bonding material. Impact Crusher is no need with the bottom of the sieve can prevent clogging. The hammer crusher can not be used heating methods to prevent adhesion of materials, and should be equipped with the bottom of the sieve plate, increasing the possibility of blockage.

2. Impact Crusher is suited to the soft material has applied to the material hardness of very large

Board crusher hammer strong mechanical clamping structure is scheduled for the rotor, when the rotor rotates with great inertia. Relative to the hammer crusher (hammer was hanging state), impact crusher rotor has a greater momentum, to adapt a more rigid material broken at the same time, lower energy consumption.

3. Can facilitate flexible adjustment of the particle size, wide tuning range
Counterattack breakers are many ways to adjust the particle size, such as adjusting the rotor speed, conditioning and grinding chamber counter plate and gap. Gap adjustment can be mechanical or hydraulic adjustable, hydraulic adjustment system can easily operate the button or fortune through the local control system to complete the gap adjustment. The hammer crusher adjust the particle size can only be achieved by replacing the bottom of the sieve.

4. Consumable wear little more than hammer crusher, metal high utilization
Impact Hammer wear only one side in Looking materials. When the rotor speed is normal, the feed will drop to the plate hammer surface (of attack), hammer on the back and side panels are not being worn. Even Looking material this side very little wear. And the bottom of the grinding rod is also very easy to replace. Impact Hammer metal utilization up to 45%? 48%. The hammer crusher hammer was hanging state, the wear occurs, the front and rear and side, relative to the plate hammer, hammer wear more serious, hammer metal utilization ratio is only about 25%. And the rotor body itself may also be worn. Hammer crusher wear badly affected by the bottom screen, grille to replace all, and replace the sieve of the work more complicated.

5. Easy replacement of spare parts, less maintenance costs
Crusher rotor only hammer to install six panel, using special tools provided by the plate hammer easily replaced, the replacement of a board of only one frequency hammer time. The bottom of the rod mill grinding chamber also requires only the replacement of dozens of minutes, greatly reducing maintenance and maintenance time and costs. The hammer crusher hammer up to 100 only, changing to a hammer a lot of time and manpower, repair and maintenance costs higher. Replacement of the bottom screen is also extremely cumbersome. Fortune

above content is based on years of experience in production machinery and customer feedback, summary income information purposes only. Although the impact crusher with high technical advantages, but when you select the crusher is recommended that you first expert advice, depending on your situation to choose the most suitable crushing machine (such as jaw crusher, hammer crusher , impact crusher, etc.), lower production costs.

Do you want to happy?

Note: Cross posted from sbmzhcn.

Permalink: http://sbmzhcn.appspot.com/2010/08/29/216004.html

So happiness - isn't that the thing that all of us strive to find and keep? Nobody is happy all of the time, but some people are definitely more fulfilled than others. Studies on what makes people happy reveal that it doesn't have much to do with material goods or high achievement; it seems to whittle down to your outlook on life, and the quality of your relationships with the people around you.To be happy you should know what to love and how much.

how to happy

1、Be optimistic. In the 1970s, researchers followed people who'd won the lottery and found that a year after they'd hit the jackpot, they were no happier than the people who didn't. They called it hedonic adaptation, which suggests that we each have a baseline level of happiness. No matter what happens, good or bad, the effect on our happiness is only temporary and we tend to rebound to our baseline level. Some people have a higher baseline happiness level than others, and that can be attributed in part to genetics, but it's also largely influenced by how you think. So while the remainder of this article will help boost your happiness, only improving your attitude towards life will increase your happiness permanently. Here are some excellent starting points for doing that:

Tal Ben-Shahar Speaks

Harvard "Happiness Professor" Available To Speak at Your Event

2、Follow your gut. In one study, two groups of people were asked to pick out a poster to take home. One group was asked to analyze their decision carefully, weighing the pros and cons, and the other group was told to listen to their gut. Two weeks later, the group that followed their gut was happier with their posters than the group that analyzed their decisions. Now, some of our decisions are more crucial than picking out posters, but by the time you're poring over your choice, the options you're weighing are probably very similar, and the difference will only temporarily affect your happiness. So next time you have a decision to make, and you're down to two or three options, just pick the one that feels right, and go with it.

3、Make enough money to meet your basic needs: food, shelter, and clothing. In the US, that magic number is $40,000 a year. Any money you make beyond that will have negligible effects on your happiness. Remember the lottery winners mentioned earlier? Oodles of money didn't make them any happier, and it won't make you any happier. Once you make enough money to support your basic needs, your happiness is not significantly affected by how much money you make, but by your level of optimism.

4、Stay close to friends and family. Or move to where other members are- so you can see them more. We live in a mobile society, where people follow jobs around the country and sometimes around the world. We do this because we think increases in salary will make us happier, but the fact is that our relationships with our friends and family have a far greater impact on our happiness than our jobs do. So next time you think about relocating, consider that you'd need a salary increase of over $100,000 USD to compensate for the loss of happiness you'd have from moving away from your friends and family. But if your relationships with your family and friends are unhealthy or nonexistent, and you are bent on moving, choose a location where you'll be making about the same amount of money as everyone else; according to research, people feel more financially secure (and happier) when they're on similar financial footing as the people around them, regardless of what that footing is.

5、Find happiness in the job you have now. Many people expect the right job or the right career to dramatically change their level of happiness, but happiness research makes it clear that your level of optimism and the quality of your relationships eclipse the satisfaction you gain from your job. If you have a positive outlook, you will make the best of any job, and if you have good relationships with people, you won't depend on your job to give your life a greater sense of meaning. You'll find it in your interactions with the people you care about. Now that doesn't mean you shouldn't aspire towards a job that will make you happier; it means you should understand that the capacity of your job to make you happy is quite small in comparison to your outlook on life and your relationships with people.

6、Smile. Science suggests that when you smile, whether you feel happy or not, your mood will be elevated. So smile all the time! In addition having enough money to pay the bills allows you to focus your energies on more productive aspects of your life, such a the pursuit of happiness as opposed to keeping the 'wolves from the door'.

7、Stop worrying! Don't have enough money to buy that new house in a better neighborhood? Hate your job? Not going to be able to pay the bills this year? SO WHAT?! BIg problems, yes. Do you need to worry about them? Well...yes. These things are important. But that should NOT be the focus of your life. If you spend all your time worrying, you'll miss out on the fun side of life. Take it easy once in a while, and just relax.

8、Be grateful for what you have. So you don't have the biggest house on the block. Or the most friends. And maybe you're not doing too well in school, or work, or whatever. Think about it like this: you're lucky to be GOING to school, to have a house or people who care about you at all! Think about the less fortunate. Volunteer at a food bank or give some items to Goodwill. It'll boost your confidence quick.

9、Have more mirrors. Yup, that's right. Put up another mirror in your room, house, office, locker, wherever. Look in them as much as possible, no matter how unattractive you think you are. And every time you look into it and see yourself, smile at yourself. Go you!

10、Start something. A club, a group, a program. Start a food drive for your school. Collect donations for the SPCA. Make a fan club for your favorite singer, or band. Throw a small party. Something light and happy to get your mind off things, and to hang out with other people who can help you relax and feel better.

Video

This video describes the latest research on what makes people happy and gives suggestions on activities that you can do to become happier!

Tips

• Just because something seems to make other people happy doesn't mean that it really does. People are very good at pretending they're happy, especially when they've invested so much into the things that are supposed to make them happy; it's hard to admit that you've been placing all your eggs in the wrong basket.

• When you're purposely trying to be happy or cheerful, but just can't seem to acheive it at the moment, do something crazy. Turn your favorite music up loud and do a stupid dance to it. Talk to yourself in the mirror. Try a new food. Rearange your room in a weird way. Write a funny or inspiring quote on your mirror/wall/locker. Scream as loud as you can (warn your family first!). Bounce up and down, jump all around. Get your swimsuit on, go outside and turn the hose on yourself, if it's a hot day. It's stupid, crazy, weird stuff like that that seems pointless, but could actually lift your mood after you do it, just because you're glad you did it.

Original Article:http://www.wikihow.com/Be-Happy

crusher equipment

Lithotripter(crusher) is the exclusive compound content of particles larger than 3 mm of the total emission rate 50% or more of the crushing machine. Operations often broken by feeding and nesting into coarse grain size of the broken, the broken and petty. Gravel equipment commonly used jaw crusher, jaw crusher, impact crusher, impact crusher, compound crusher, single-stage hammer crusher, vertical crusher, gyratory crusher, cone crusher machine, roll crusher, double roll crusher, combo breaker, a molding machine broken several.

Jaw Crusher jaw plate on the use of two materials extrusion and bending and breaking all kinds of coarse broken or hardness of the material in the crushing machine. The broken body from the fixed jaw plate and movable jaw plates, jaw plates close to the time when the two materials Jibei broken jaw plate away when the two nesting population is less than block from the bottom of the discharged material. It's crushing action is carried out intermittently. This stone crusher due to simple structure, reliable and can be broken advantages of hard materials are widely used in mineral processing, construction materials, silicate and ceramics industries.

80 to 20 of the 20th century, 800 tons of material per hour, breaking a large jaw crusher to a particle size has reached approximately 1,800 mm. Commonly used jaw crusher with elbow board and two single brackets. The former moving jaw at work only a simple swing arc, so called simple swing jaw crusher; the latter for the swing arc to move up and down also, so called complex swing jaw crusher. Jaw Crusher widely used in mining, smelting, building material, highway, railway, water conservancy and chemical industry and other sectors, breaking strength no more than 320 MPa of various materials.

Single-plate jaw broken elbow mobile jaw plate up and down movement to promote the role of nesting, and its level of travel is greater than the upper part of the lower part of bulk materials easily broken, so the broken above the elbow plate efficiency. The disadvantage is that jaw plate wear faster, and the materials have been smashing the spontaneous increase in energy consumption. In order to protect the important parts of the machine is not damaged due to overload, and often the shape of the small size of the brackets designed for weak links, overload the machine when it first deformation or fracture.

In addition, to meet the requirements of different marker size and compensation jaw plate wear and tear, but also the addition of nesting population adjustment device, usually in brackets after the frame between the seat and adjust the pads or radiotherapy, wedge. However, in order to avoid damage to replace broken parts to affect production, but also can be used hydraulic equipment to achieve security and adjustment. Some jaw crusher also has a direct hydraulic drive to drive fixed jaw plate, to complete the materials in the crushing action. These two types of hydraulic transmission equipment jaw crusher, often referred to as hydraulic jaw crusher.

Gyrating crusher cone crusher is used in the shell cavity of the cycle within the cone movement of materials generated extrusion, splitting and bending and hardness of coarse broken all kinds of large-scale ore or rock crushing machinery. Broken cone axis with the upper bearing bush in the middle of the beam, the lower end of the eccentric sleeve is placed in the hole. Sleeve rotates around the broken cone axis for eccentric cycle exercise machine of its crushing action is continuous, and therefore the efficiency of higher than jaw crusher machine. To the early 70s, large gyratory crusher has been able to handle material per hour, 5,000 tons, the largest feeding up to 2,000 mm diameter.

Gyratory Crusher two ways to achieve nesting population adjustment and overload insurance: the first is using mechanical means, the spindle nut to adjust the top, rotate adjusting nut, cone can be broken down or up, so I followed changes nesting bigger or smaller, overloaded, by cutting off the pin on the drive pulley to achieve insurance; The second way is to use hydraulic breakers hydraulic cycle, the spindle is located in the hydraulic cylinder of the plunger, the change under the plunger hydraulic oil can change the volume up and down the cone crusher location, thus changing the nesting population size. Overload, the spindle downward pressure to force the plunger into the hydraulic oil under the accumulator in the hydraulic system so broken down cone to increase the nesting along the mouth of material discharged into the crushing chamber with a non-broken materials (iron, wood, etc.) in order to achieve security.

Concrete Recycling system

Concrete Recycling system Introduction
At present，most of concrete mixing plants connot provide good residual concrete recovery system in our country. The majority adopt the sedimentation pond to complete the separation of liquid and solid. Although this method can realize part of sewage recycling, it cannot solve the recycling problem of sand stone and cement in the concrete thoroughly.During the production concrete, some scrap concrete may be generated. Once these scrap concrete aoagulates, it will pollute environment. According to statistics, scrap concrete compositon accounts for 1%-2.5% of the total concrete production, which brings massive economic loss and the environmental pollution. In order to meet the market development and demand, combined with our long years experience in research and manufacturing the aggregate processing equipment, we have developed a new generation scrap concrete recycling system, CRP series concrete cycling plants,achieves truly zero emission.

The Composition of concrete recycling System
Concrete recycling plants is composed of sand washer，water circulation system ect.

Features and advantages of the concrete recycling System
1.simple and compact structure; convenient operation and maintenance
2.recycling aggregate continuously
3.avoiding the environment pollution from concrete and enhancing economic benefits of the concrete manufacturer for aggregate recycling.

Stone production line

Stone production line includes vibrating feeder, jaw crusher , impact crusher , vibrating screen , belt conveyor and centrally electric controlling system, etc. The designed capacity is from 50t/h to 500t/h. To meet customer’s specific requirement, we can also add other equipments such as cone crusher, dust catcher on the production line.

Process of Stone Production Line:

Vibrating feeder feeds the big materials into jaw crusher evenly and gradually through a hopper for primary crushing. After the first crush, the materials will be transferred to impact crusher by belt conveyor for the secondary crush. Then the crushed materials will be transferred to vibrating screen for separating. After separating, the part materials will be returned to impact crusher, while the others that can meet standard will be transferred away as final products, thus forming a closed circuit. We can equip dust catcher system to protect environment. In addition, the size of final products can be also combined and graded according to customer’s specific requirement.

Sand production line

Sand production line includes vibrating feeder, jaw crusher, impact crusher, vibrating screen , belt conveyor and centrally electric controlling system, etc. The designed capacity is from 50t/h to 500t/h. To meet customer’s specific requirement, we can also add other equipments such as cone crusher, dust catcher on the production line.

Process of Sand Production Line:

The stone material is sent regularly by the vibrating feeder to the primary jaw crusher , the crushed material is sent to the secondary jaw crusher to be crushed again. The crushed material is sent by belt conveyor to vibrating screen to be separated. The material, whose size is suitable for the feed size of the sand making machine, can be sent to the sand making machine. The unsuitable material should be sent back to the secondary jaw crusher to be crushed again. The crushed material from the sand making machine is sent back to the vibrating screen to be separated. The suitable separated sand, which is the final product, should be sent to the sand washing machine to be cleaned, and then sent by the belt conveyor. The unsuitable separated sand should be sent back to the sand making machine to be crushed again. The producing line forms two closed cycles. The producing line can be changed according to the customers’ requests.

Vibrating screen

Vibrating screen  is the circular vibrating type; we called it circular vibrating screen also. SBM’s vibrating screen earns this name by reason of its approximately circular movement. Vibrating screen is of multilayer and high efficient. The eccentric shaft vibration exciter and partial block help to adjust amplitude. This kind of vibrating screen is of long streamline, clear screening for different specifications.

Vibrating Screen Application

Vibrating screens are widely used for grading and screening materials in such fields as chemical industry, minerals, quarry, building materials, water conservancy and hydropower, transportation, smelting and so on. Vibrating screens are efficient screening machines for the classification of bulk material such as coal, minerals, coke etc. There are 40 specifications for this series vibrating screen, of which the heavy duty type of vibrating screens are for the classification of large size materials, while the light duty type of vibrating screens are for the middle and small size materials.

Vibrating Screen Working Principle

Vibrating screens work on circular motion. The vibrating screens are mainly used in coal dressing, metallurgy, mine, power station, water conservancy project, building industry, light industry and chemical industry etc They are efficient screening machines for the classification of bulk material such as coal, minerals, coke etc There are 40 specifications for YK Series, of which the heavy duty type is for the classification of large size materials, while the Light duty type is for the middle and small size materials.
Vibrating Screen moves round .It has multi-layers and is of high efficiency. The eccentric shaft vibration exciter and partial block help to adjust amplitude. The material drops down along the long line.

Belt Conveyor

Belt Conveyor is the essential and economical transferring set in the uninterrupted production line. In terms of transferring capacity, belt conveyor can be classified into two types, the heavy type such as for mining convey and the light type for plastic, food and chemical industry, etc. Belt conveyor features with strong transferring capacity, easy maintenance and long conveying distance.SBM is a professional belt conveyor manufacturer,according to different material,we design diffierent belt conveyor.Our belt conveyor is your beat choise.

Belt Conveyor Application

Belt Conveyor is widely used in the fields such as mining, metallurgical and coal industry to transfer sandy or lump materials. Single set or unit of multi-sets of belt conveyor can be chosen to meet virus production lines.

Belt Conveyor System

Belt conveyor systems is consisting of a metal frame with rollers at either end of a flat metal bed. The belt is looped around each of the rollers and when one of the rollers is powered (by an electrical motor) the belting slides across the solid metal frame bed, moving the product. In heavy use applications the beds which the belting is pulled over are replaced with rollers. The rollers allow weight to be conveyed as they reduce the amount of friction generated from the heavier loading on the belting. Belt conveyors can now be manufactured with curved sections which use tapered rollers and curved belting to convey products around a corner.

Belt Conveyor Main Features and Benefits

1. stable and longer convey with no relative movement.
2. noise reduction.
3. simple structure, easy maintenance, energy-saving and low cost.

symons cone crusher

Symons cone crusher Overview

As the worlds earliest cone crusher  , the Symons cone crusher features widest application and largest storage in the world .And based on the optimized improvement ,the Symons cone crusher  features more reasonable and advanced ,which have appeared excellent performance in the manufacturing ,installation, and maintenance and so on. And also the Symons cone crusher adopt the novel design principle and the new idea crushing technology, which can satisfy the crushing with various specifications .And the Symons cone crusher also satisfy the new -craft requirements of “ more crushing and less grinding”.
Symons cone crusher is widely applied in cement making industry, building, sand making, metallurgical industry, etc. The cone crusher from China is suitable for both metallic minerals and non-metallic minerals, such as iron ore, nonferrous metal ore, granite, limestone, quartzite, sandstone, pebble, etc.

bauxite mining

The general process of extracting aluminum in industry is as follows: First you need to extract alumina from bauxite. Then the alumina will be changed to aluminum by electrolysis. Now there are mainly three methods for alumina production which include sintering, Bayer and joint method.
However, there is a very important procedure before extracting aluminum from bauxite mine that is bauxite crushing and bauxite grinding. Generally we choose SBM crusher or SBM grinding mill to crush the raw materials to be required fineness before used to produce aluminum. Bauxite crushing is relatively simple. Generally we use the professional SBM mining equipments for bauxite crushing. As the leading stone crusher manufacturer and grinding mill  manufacturer, SBM has also been closely following the bauxite mining at home and abroad. SBM has manufactured large amount of mining equipments to global countries, such as jaw crusher series, impact crusher series, cone crusher series and the grinding mill series, etc. SBM mining equipments have been exported to more than 130 countries which are widely applied in mining industry including the bauxite crushing. For decades, SBM has always continued to innovate in the development, production, sales, and service sectors. Rich experience and high-tech applications help our products maximize customers’ satisfaction.

ball milling

Note: Cross posted from blogspot001.

Permalink

As a piece of mineral processing equipment, a ball mill  is widely used in beneficiation, building material and chemical industries. Ball mill is suitable for dry-type ore grinding and wet-type ore grinding. According to different discharging methods, ball mills fall into grate ball mill and overflow ball mill.

Working Principle:
Our ball mill is of horizontal, cylindrical and tubular structure. It comes with two cabins and is a grate ball mill. The materials are evenly fed through the charging device to first warehouse where there are step scales boards, corrugated scale boards and different specifications of steel balls. When the cylinder rotates, the centrifugal force produced causes the steel balls to impact and grind the materials in the ball mill. The materials are then lead to the second cabin for further milling until they turn into powders and are discharged from the outlet.

Ways of Improving Productivity:
In addition to manufacturing ball mill, we also carry our research on improving its productivity. Generally speaking, the productivity of ball mil can be improved by
1. adding fine crusher before the ball mill.
2. improving grinding system to achieve better grinding efficiency.
3. adding powder concentrator..

Range of Applications:
Ball mill is a mineral processing machine for milling the materials into powders after they are crushed. It is widely applied to the production of cements, silicate products, building materials, fireproof materials, fertilizers, glass, ceramics as well as nonferrous and ferrous metal processing industries. It could carry out dry and wet millings on different materials.

Structural Features:
This ball mill is made up of feeding part, discharging part, gyre part, transmission part (transmission part includes reducer, small transmission gear, generator and electrical control) and so on. It enjoys features like good abrasive resistance, stable and reliable operation.
Inner structure of the ball mill is made up of lining plate, grate plate, diaphragm, feeding and discharging devices. The lining plate is used to protect the tank body in order to avoid the impact and abrasion from materials. Different types of lining plates can be used to adjust the movement of materials. Our lining plates are provided by Luoyang anti-abrasion academe and have a large share in the global market with their fine design.

Usage in Mineral Processing:
Minerals are firstly crushed by jaw crusher until they are crushed to suitable sizes. They are then equally fed to a ball mill with a hoister and a feeder. Later, they are further crushed and milled in the ball mill. Finally, fine minerals are classified by a spiral classifier with the principle that solid particles sink at different speeds in liquid.

Kaolin Crusher and kaolin stone Mill

Note: Cross posted from blogspot001.

Permalink

Rocks that are rich in kaolinite are known as kaolin, which is a fine, pure-white clay (hydrated aluminum silicate). Some of kaolin is hard rock, some is soft clay. Kaolin rock must be crushed and fine grinded to get kaolinite. SBM can supply kaolin crusher and kaolin Grinding mill  for you.

Kaolinite is one of the most common minerals. Kaolinite is used in ceramics, medicine, coated paper, as a food additive, in toothpaste, as a light diffusing material in white incandescent light bulbs, and in cosmetics. It is generally the main component in porcelain.

Rocks that are rich in kaolinite are known as kaolin, which is a fine, pure-white clay (hydrated aluminum silicate). Some of kaolin is hard rock, some is soft clay.

Hard kaolin rock must be crushed and fine grinded to get kaolinite. The crushing process can be constructed by Jaw crusher, vibrating feeder, vibrating screen, and belt conveyor. Of coarse, Jaw crusher  can be replaced by Cone crusher  or Impact crusher , which depends on requirement to the size, shape of the stones and design plan of kaolin production line. The grinding process includes ball mill, hopper, classifier, elevator and so on. Ball mill can be replaced by ultrafine mill, coarse powder mill, raymond mill or MTW trapezium mill.

Soft clay must be dryed before grinding. The grinding process is the same as hard kaolin rock grinding process.

Barytes Crushing & Grinding Plant

SBM is a professional manufacturer of barytes crusher and barytes crushing plant. The commonest barytes crusher is SBM JCE jaw crusher . In addition, SBM supply stationary crushers, such as cone crusher, symons cone crusher, impact crusher, jaw crusher, hammer crusher, and mobile crusher. SBM crusher is you best choice for crushing barytes.

Barytes Grinding Plant

SBM is a professional manufacturer of barytes grinder mill and barytes grinding plant. The commonest barytes grinding mill is SBM MTM trapezium mill. Besides, SBM can supply raymond grinding mill, ball grinding mill, MSB coarse powder mill, etc and design kinds of whole grinding plant on the basis of customers' requirement. SBM grinding mill  is your best choice of grinding barytes.

History of Concrete

Concrete is a material used in building construction, consisting of a hard, chemically inert particulate substance, known as an aggregate (usually made from different types of sand and gravel), that is bonded together by cement and water.

Concrete has been used in construction for over 2,000 years, perhaps first by the Romans in their aqueducts and roadways.

The Romans used a primitive mix for their concrete. Mortar consisted of small gravel and coarse sand mixed together with hot lime and water. To reduce shrinkage, they used horse hair, much like we use polypropylene fibers today. They even unintentionally entrained the air in the mix by adding animal blood. That process created small air bubbles in concrete, making the mix more durable.

The Romans' use of concrete was extensive -- they built some 5,300 miles of roads (compare this to 4,200 miles of interstate highways in the United States).

While Roman roads ceased carrying chariot traffic long ago, one road in Bellefontaine, Ohio, has put in over 100 years of service and still provides a route for cars and trucks to travel.

Closer to home, a section of concrete pavement in Spokane is thought to be "circa 1910-ish" and, by the way aggregate was deposited in the mix, some experts think it was poured by horse and buggy.

Today, concrete is finding more inventive uses including residential construction and works of art.

Some homes in hurricane-ravaged Florida are being replaced by concrete dwellings because of their high wind resistance.

In Malibu, Calif., a fire several years ago decimated an entire hillside of homes, except for one house: it was made of concrete.

PFW Series Impact Crusher

PFW series impact crushers are the latest development of impact crusher  based on sbm’s more than 20 years experience and leading technology in PF impact crusher. PFW series impact crushers have the features of heavy duty rotor design, unique hammer locking system, interchangeable wearing parts, and easy maintenance.

This series impact crushers provide customers low capital cost solutions, outstanding performance, good cubical shape, lowest operation cost per ton, and wide materials applications.

PFW Series Impact Crusher (Hydraulic) application The hydraulic impact crusher is mainly used for metallurgy, mining, cement, chemicals, refractory and ceramic industries sector. In highway construction, water conservancy projects, building rubble and sand processing, the crusher machine is also widely used.

PFW Series Impact Crusher (Hydraulic) Main Features and Benefits1) Heavy duty rotor design2) Unique hammer locking device3) Interchangeable liners4) Flexible application in primary and secondary crushing5) Easy operation and simple maintenance

Cone crusher,do you know cone crusher?

Note: Original Article by sbmzhcn.

Permalink: http://sbmzhcn.appspot.com/2010/08/29/172003.html

Applications of Cone Crusher:

Cone crusher  is a kind of crushing machine commonly used in mining, metallurgical industry, construction, road construction and chemical industry.
Our cone crusher can be used to crush hard and medium hard minerals, rocks, iron ores, limestone, copper ores, quartz, granite, sandstones, etc.

Features of Cone Crusher:

1. Our cone crushers has the characteristics of large breaking force, high efficiency, high crushing capacity, low operating cost and long service life. It is convenient to operate and is economical.
2. The crushed materials are of equal size, thus reducing circulating load.
3. Large and medium-sized crushers adopt hydraulic chamber-cleaning systems, which will help reduce the down time.
4. Cone crushers with different chambers are available, to meet our customers' requirements.
5. Grease seal can effectively avoid the blockage of water feeding system and drainage system, as well as mixing of water and oil.
6. As the overload protection device, spring safety device allows foreign matter and iron pieces to pass through the crushing chamber without jeopardizing machines.

Components of Cone Crusher:

Cone crusher mainly consists of frame, horizontal axis, cone brake, balance wheel, eccentric sleeve, upper crushing wall (welding cone), down crushing wall (movable cone), fluid coupling, lubricating system, hydraulic system and control system.

Cone Crusher Working Principle:

1. When cone crusher is working, motor drives the eccentric sleeve to rotate. The eccentric sleeve drives the transmission shaft and cone part to make swing movement. When they swing to the extent that the surface of the crushing wall is close to the roll mortar wall, the rocks and ores are pressed and crushed.
2. Joint between supporting sleeve and frame is compressed by spring. When metal block and other materials that can no be crushed fall into the crusher, spring will be out of sharp and discharge the objects.
3. When the materials that can not be crushed pass through the crushing chamber or the machine overloads, the spring safety system makes the cone discharging hole become larger. When objects are discharged from crushing chamber, discharging hole will automatically reset. Cone crusher resumes normal operations.
4. The surface of crushing chamber is covered with wear-resisting high manganese steel lining plate. Size of discharging hole can be adjusted hydraulically or manually.

Structural Characteristics Of Cone Crusher:

1. This crushing equipment has compact structure and high productivity. It adopts bowl-shaped bearing which has high precision. Concentrated thin oil lubrication system is also used.
2. The size of the discharge opening can be adjusted by propelling cylinder. When the materials that can not be crushed enter into the crushing chamber, the spring safety device can protect the equipment.
3. This machine adopts grease seal to avoid mixing of water and oil. When sealing parts are worn, spring can help them recover sealing function. When the thickness of sealing part reduced to 1/4-1/3 of the original thickness, users should replace the sealing part.

See also symons cone crusher

Symons cone crusher (sales code, CS series symons cone crusher) is used widely at present, Compared to the traditional spring cone crusher, the structure of the Symons spring cone crusher with high-efficiency is more perfect, and its technical parameters are more advanced, and Symons cone crusher machine has excellent performance in the manufacture, installation, operation and maintenance. Symons cone crusher is the best choice for mining crusher with fine crushing, high productions and low maintenance.

Symons cone crusher is widely applied in cement making industry, building, sand making, metallurgical industry, etc. The cone crusher from China is suitable for both metallic minerals and non-metallic minerals, such as iron ore, nonferrous metal ore, granite, limestone, quartzite, sandstone, pebble, etc.

The picture of cone crusher and symons cone crusher

  

Also a brief description of ball mill

Note: Cross posted from sbmzhcn.

Permalink

As a piece of mineral processing equipment, a ball mill is widely used in beneficiation, building material and chemical industries. Ball mill is suitable for dry-type ore grinding and wet-type ore grinding. According to different discharging methods, ball mills fall into grate ball mill and overflow ball mill .

Working Principle:
Our ball mill is of horizontal, cylindrical and tubular structure. It comes with two cabins and is a grate ball mill. The materials are evenly fed through the charging device to first warehouse where there are step scales boards, corrugated scale boards and different specifications of steel balls. When the cylinder rotates, the centrifugal force produced causes the steel balls to impact and grind the materials in the ball mill. The materials are then lead to the second cabin for further milling until they turn into powders and are discharged from the outlet.

Ways of Improving Productivity:
In addition to manufacturing ball mill, we also carry our research on improving its productivity. Generally speaking, the productivity of ball mil can be improved by
1. adding fine crusher before the ball mill.
2. improving grinding system to achieve better grinding efficiency.
3. adding powder concentrator..

Range of Applications:
Ball mill is a mineral processing machine for milling the materials into powders after they are crushed. It is widely applied to the production of cements, silicate products, building materials, fireproof materials, fertilizers, glass, ceramics as well as nonferrous and ferrous metal processing industries. It could carry out dry and wet millings on different materials.

Structural Features:
This ball mill is made up of feeding part, discharging part, gyre part, transmission part (transmission part includes reducer, small transmission gear, generator and electrical control) and so on. It enjoys features like good abrasive resistance, stable and reliable operation.
Inner structure of the ball mill is made up of lining plate, grate plate, diaphragm, feeding and discharging devices. The lining plate is used to protect the tank body in order to avoid the impact and abrasion from materials. Different types of lining plates can be used to adjust the movement of materials. Our lining plates are provided by Luoyang anti-abrasion academe and have a large share in the global market with their fine design.

Usage in Mineral Processing:
Minerals are firstly crushed by jaw crusher until they are crushed to suitable sizes. They are then equally fed to a ball mill with a hoister and a feeder. Later, they are further crushed and milled in the ball mill. Finally, fine minerals are classified by a spiral classifier with the principle that solid particles sink at different speeds in liquid.

What kind of technical features of the CS Series Cone Crusher ?

Technical Features of CS Series Cone Crusher

1、 high performance

With the better cavity design and combination of the reasonable speed and stroke ,the cone crusher can make more power under the same flexible cone .Therefore ,this kind of cone crusher have higher performance and production capability compared with the similar cone crusher .

2、better particle components

With the principle of layer crushing ,the final products features high cubic shape ratio ,low ratio of needle shape stone ,and more even particle size .

3、high stability

When some non-crushing materials like the iron enter the machine ,the iron-pass protection equipment will automatically release them and then return the original position .And the iron-pass protection equipment have the fixed discharge opening returning point so that it can return to the original discharge opening after the non-iron materials pass the crushing cavity .

4、 convenient cavity cleaning

If the crusher stop the working function under the overloading condition ,the hydraulic cavity cleansing system will quickly clean the crushing cavity ,which will greatly reduce the off-time .

5、 high reliability

we adopt large ram spindles ,heavy main machine frame and independent light oil automatic control lubrication system ,which ensure the robust equipment structure and reliable function .

6、onvenient maintenance and operation

All of the spare parts can be torn apart from the top and side board and so did the fixed and flexible cone .And the bronze slide bearing can maintain the quality bearing capability under the condition of high impact shaking crushing condition and also features more economic and convenient maintenance than the rolling bear .

7、low production cost

With the high production capability reliability , and convenient maintenance ,it greatly reduce the production cost .

8、wide application

CS series Symons cone crusher can make its full advantages to apply various crushing crafts from the super coarse to the fine crushing , from the fixed crushing to the mobile crushing .
CS series Symons cone crusher have a wide crushing cavity choice from super coarse crushing to the fine crushing ,which means we can choose the crushing cavity by the crushing crafts .

9、We adopt the segregate and multi-point control independent light-oil lubrication system to ensure the double-protection of its bearing ,thus realizing the automatic protection of the whole machine .

Permalinks: http://blog.rockscrusher.com/product-knowledge/what-kind-of-technical-features-of-the-cs-series-cone-crusher.html

Ball mill introduction

Ball mill is the material being broken, and then smash the key equipment . It is widely used in cement, silicate products, new building materials , refractory materials , fertilizer , black and non-ferrous mineral processing and manufacturing industries such as glass ceramics , of various ores and other materials can be carried out of dry ground or wet grinding . Applicable to all kinds of ball mill grinding ore and other materials , is widely used in mineral processing , building materials and chemical industry can be divided into two kinds of dry and wet grinding methods . According to Pai mine in different ways, can be divided into two grid -based and Overflow
Machine name
Ball Mill  (ball grinding mill)
Ball is the material being broken, and then smash the key equipment .
Ball mill is widely used in industrial production of high- fine grinding machine .
Many of its species , such as hand ball mill , horizontal mill, ball mill , energy saving ball mill , overflow -type ball mill , ceramic ball mill , ball mill and other lattice .
Applicable to all kinds of ball mill grinding ore and other materials are widely used dressing , building materials and chemical industry can be divided into
BallMillMachine
Two for the dry and wet grinding methods . According to Pai mine in different ways, can be divided into two grid -based and Overflow .
Work
Ball in aerated Conceter Preparation of equipment is the most important ball , he used lime, plaste, sand , slag and other materials grinding . Only material to the required fineness of grinding , and only after full mixing interaction can make the product meet the strength , the production of aerated concrete grinding is an important process, grinding process of consumption powder Large , ball mill is usually aerated concrete factory in the largest electrical equipment capacity .
Ball is a simplified level , and out of the hollow shaft and grinding materials and other components , simplified for the long cylinder , cylinder with grinding media cylinder for the plate Manufacturing, with steel liner and simplified fixed , usually steel ball grinding media according to different tube diameters and a certain percentage of load , the steel grinding media can also be used in paragraph
According to the granularity of abrasive material to choose , the material from the mill feed end of the hollow shaft into the cylinder body , when the ball Simplified rotation when the grinding media due to inertia and centrifugal force, Fritco Role , it posts to be near the cylinder liner on the barrel away , when was taken to a certain height , because of its own gravity has been into the falling , falling as grinding media to drum like projectile body material To smash .
Material from the feed device into the compound by air evenly into the mill screw shaft first warehouse , the warehouse there are ladder liner or corrugated liner , built in different specification steel balls , steel ball cylinder rotation produces centrifugal force brought to a certain height After the fall , on the material produced Blow And abrasive . To coarse grinding of materials in the first position after the board by the single compartment into the second warehouse , the warehouse lined with flat lining , there Ball mill, the material to further grinding . Powder discharged through the discharge grate plate to complete the grinding operation .
Cylinder in the rotary process, the phenomenon of grinding media have fallen in the fall to the material in the process of grinding effect , for effective use of abrasive , size of material to teach a large general purpose Ground 20 times , the body tube mill Body board with a separate compartment for the Er Duan , becoming dual position , the material into the first position when the ball was crushed , the material into the second position when the steel side of the material for grinding , ground of qualified materials from the discharge end Discharge hollow shaft of a small feed particles were pulverized materials , such as when the 2nd slag sand , coarse fly ash, mill shell from time to set up Clapborad Into a single storage tube mill , grinding of steel section sizes can be .
The machine is a horizontal rotating device, outer gear , the two positions, lattice-type ball mill . Material from the feed device into the compound by air evenly into the mill screw shaft first warehouse , the warehouse there are ladder liner or corrugated liner , built in different specification steel balls , steel ball cylinder rotation produces centrifugal force brought to a certain height After the fall , produce severe impact on the material and abrasive . To coarse grinding of materials in the first position after the board by the single compartment into the second warehouse , the warehouse lined with flat lining , steel ball inside , the material to further grinding . Powder discharged through the discharge grate plate to complete the grinding operation .

Article Origin:http://sbmzhcn.appspot.com/2010/08/26/138006.html

the classification of grinding mill

1.Ball Mill

The ball mill  is a key equipment to grind the crushed materials, and the ball mill is widely used in powder-making production line including cement, silicate, new-type building material, refractory material, fertilizer, ore dressing of ferrous metal and non-ferrous metal, glass ceramics, etc, and the ball mill can grind various ores and other materials with dry type and wet type. There are two kinds of ball mill, grate type and overfall type due to different ways of discharging material. The ball mill is a horizontal rotating device transmitted by the outer gear. The materials are transferred to the grinding chamber through the quill shaft uniformly. There are ladder liner and ripple liner and different specifications of steel balls in the chamber. The centrifugal force caused by rotation of barrel brings the steel balls to a certain height and impact and grind the materials. The ground materials are discharged through the discharging board thus the grinding process is finished.

2.LM Vertical Roller Mill

LM-series vertical roller mill is one advanced mill, adopting top technology domesic and abroad, and based on many years mill experiences. It can crush, dry, grind, and classify the materials.
LM series vertical roller mill can be widely used in such industries as cement, power, metallurgy, chemical industry, non-metallic mineral. It is used to grind granular and powdered materials into powder with required fineness.

3.MCF Coarse Powder Mill

The MCF Coarse Powder Mill series is a kind of new high-tech milling machine to meet the requirements of sand processing customers. Based on years research experience of our experts in the milling industry and considering recommendations & requirements of domestic and foreign clients, it is the ideal equipment to replace Raymond Mill, mill, ball mill, and other traditional which only process powder materials. It is high-efficiency equipment and widely applied in quartz sand, silica sand, foundry sand, fine sand and other sand abrasive industry. By being a component of closed production lines, it can produce various size products of better effect.

4 .raymond mill

From the shape look like a steel container to erect , with inlet , outlet and central parts of the feed port . MPS mill shape and some approximation . Raymond mill  stick rotation axis is vertical , MPS mill grinding stick rotation axis is the approximate level . Within the lower part of a motor driven mill grinding mill rotation will need to stick with the grinding material crushing or grinding through the air inlet of the wind blowing finished materials , mill within the upper part of separator can be separated coarse and fine powder , and then passed through the mill The wind machine out of the outlet from the collection

5.coal mill

coal mill must be crushed before grinding. The crushing plant common includes Vibrating feeder as feeding material to Jaw crusher, which is as primary Jaw crusher. If need secondary crusher, Cone crusher or Impact crusher can be used. After primary crushing, the coal can be feeding to Ball mill to fine grinding. To increase Ball mill effective, the vertical coal mill or coarse powder mill can be setted before Ball mill as pre-grinding.

Roller mill and ball mill

The ball mill's general explanation:

Using the whereabouts of the grinding ball and pebbles (such as impact) and polishing and grinding ball mill and wall materials and mixed grinding. When the ball mill turns, due to the wall and grinding ball grinding of the friction between the role. According to the direction of rotating grinding body after falling on again. This material is continuously by grinding. According to the shape of the body can be divided into cylinder ball mill , cone ball mill and tube mill (also called tube mill).

Advantage:

1. (1) can be used to dry or wet grinding mill,
2. (2) operating conditions, crushing machine in airtight, not within the dust flying,
3. (3), reliable operation, grinding, and convenient to replace body cheap,
4. (4) can be intermittent operation, also can be operated continuously,
5. (5) crushing explosive materials, grinding can be filled with inert gases to replace the air.

Faults:

1. (1) bulky heavy,
2. (2) operation when strong vibration and noise, must have the solid foundation,
3. (3) working efficiency, low energy consumption, bigger,
4. (4) grinding and the friction loss, and will contaminate products. Widely used in crushing hard material feeding.

Slag grinding

Blast furnace slag water quenching process as active mixing materials in the cement industry
That is widely used, application and clinker and plaster mixed with materials such as after grinding.
According to Chinese standard, ordinary cement slag cement admixture of 15% below, slag cement supreme mixing

For 70 percent, the actual production of slag cement admixture of general only 30% ~ 40%. Affect ore
Slag is the main reason of the admixture of clinker and slag mixed grinding, due to the relatively difficult slag grinding (mine The slag grinding clinker higher than 30%), the slag cement clinker components, components of coarse than Activity to improve, thereby affecting cement strength.

If the slag grinding to separate 4500cm2 / g more fineness and high-grade pure Portland again
Cement mixed, not only can improve the admixture of slag cement, and can be improved
Cement and concrete phychemical properties of slag, give full play to the potential value.
From the middle of the 1990s, the world more and more cement and steel enterprises Start using a separate grinding process of slag powder preparation. The equipment adopts mainly have three: the ball Roller grinding mill, and roller machine, roller mill by simple process, drying system has strong ability of low power consumption and Advantages and rapid development, China's largest steel enterprises most slag has been built Grinding mill production line.
φ 3.0 x 13m ball mill also can use single fan circle flow system.
From the mixture of slag mix station, feeding grinding mill , out of the ground
Bucket to efficient classifier, elected powdered sorting by belt conveyor to mine
Slag grinding with new feeding grinding, with a fine powder with air into the bag dust collector, take mine
Slag finished by air slides, hoist, slag repository to purify the air after discharge
The atmosphere.

jaw crusher and jc jaw crusher introduciton

New generation crusher , jc series jaw crusher is born with innovative significance. It is newly designed and improved by our experts on basis of their more than 20 years’ crusher manufacturing and designing experience. The unique design concept makes this series crusher achieve perfect combination between crushing efficiency and operating cost. Meanwhile, it has wide range of application, particularly suitable for crushing hard rock, such as basalt, river pebbles.

Features:

1. Durable moving jaw assembly.
2. Integral cast steel bearing housings.
3. Fast and safe setting adjustment.
4. Reasonable cavity design.
5. Larger-size and larger-carrying-capacity bearings
6. Compact & robust structure

Jaw crusher  main parts: jaw guard, main bearings, eccentric shaft, flywheel wheel (lain/grooved), set adjustment, tension rod, toggle plate, jaw stock, movable jaw plate, fixed jaw plate, frame, cheek plate (down), cheek plate (up).

Jaw crusher uses motor as its power, through the motor's wheels; the eccentric shaft is driven by the triangle belt and slot wheel to make the movable jaw plate move by a regulated track. Therefore, the materials in the crushing cavity composed of fixed jaw plate, movable jaw plate and side-lee board can be crushed and discharged through the discharging opening.

JC series jaw crusher also named European jaw crusher is driven by motor. Through the motor's wheels, the triangle belt and slot wheel drive the eccentric shaft to make the movable jaw plate move by a regulated track. Then, the materials in the crushing cavity composed of fixed jaw plate, movable jaw plate and side-lee board can be crushed and discharged through the discharging opening.

It is similar to the jaw crusher operating principle, but the working result maybe not the same because of JC jaw crusher's advantages. That's also the reason why this jaw crusher is famous in the world.

ball mill

coal crushing plant

Coal is a readily combustible black or brownish-black sedimentary rock normally occurring in rock strata in layers or veins called coal beds. Coal has very wide using fields in our daily life. SBM crushers and Grinding mills are neccssary equipments in coal processing.

Coal

Coal is a readily combustible black or brownish-black sedimentary rock normally occurring in rock strata in layers or veins called coal beds. The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. Coal is composed primarily of carbon along with variable quantities of other elements, chiefly sulphur, hydrogen, oxygen and nitrogen.

Coal Uses

•Coal as fuel
•Coking and use of coke
•Ethanol production
•Gasification
•Liquefaction
•Industrial processes
•Cultural usage
•Coal as a traded commodity

Coal Crushing Plant

In order to use coal more rationally, efficiently and effectively, the coal need to be processed and crushed into different sizes, 0 ~ 25 mm particle size for coal gas stove, 25 ~ 8 mm for steam locomotive, 25 ~ 6 mm for the industrial furnace, and coal power plant requires grain coal of 0 ~ 25mm. So coal processing includes coal crushing and coal grinding. Coal crushing plant consist of many types of crushers and Grinding mill . Coal crushers including primary Jaw crusher, secondary Impact crusher and Cone crusher etc. Coal mill include Ball mill, Raymond mill, Vertical mill etc.

Coal Crushing and Grinding Process

If the coal block is bigger than the mill’s max input size, it must be crushed before grinding. The crushing plant common includes Vibrating feeder as feeding material to Jaw crusher, which is as primary Jaw crusher. If need secondary crusher, Cone crusher or Impact crusher can be used. After primary crushing, the coal can be feeding to Ball mill to fine grinding. To increase Ball mill effective, the vertical coal mill or coarse powder mill can be setted before Ball mill as pre-grinding.

coal crushing plant

Coal is a readily combustible black or brownish-black sedimentary rock normally occurring in rock strata in layers or veins called coal beds. Coal has very wide using fields in our daily life. SBM crushers and Grinding mills are neccssary equipments in coal processing.

Coal

Coal is a readily combustible black or brownish-black sedimentary rock normally occurring in rock strata in layers or veins called coal beds. The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. Coal is composed primarily of carbon along with variable quantities of other elements, chiefly sulphur, hydrogen, oxygen and nitrogen.

Coal Uses

•Coal as fuel
•Coking and use of coke
•Ethanol production
•Gasification
•Liquefaction
•Industrial processes
•Cultural usage
•Coal as a traded commodity

Coal Crushing Plant

In order to use coal more rationally, efficiently and effectively, the coal need to be processed and crushed into different sizes, 0 ~ 25 mm particle size for coal gas stove, 25 ~ 8 mm for steam locomotive, 25 ~ 6 mm for the industrial furnace, and coal power plant requires grain coal of 0 ~ 25mm. So coal processing includes coal crushing and coal grinding. Coal crushing plant consist of many types of crushers and Grinding mill . Coal crushers including primary Jaw crusher, secondary Impact crusher and Cone crusher etc. Coal mill include Ball mill, Raymond mill, Vertical mill etc.

Coal Crushing and Grinding Process

If the coal block is bigger than the mill’s max input size, it must be crushed before grinding. The crushing plant common includes Vibrating feeder as feeding material to Jaw crusher, which is as primary Jaw crusher. If need secondary crusher, Cone crusher or Impact crusher can be used. After primary crushing, the coal can be feeding to Ball mill to fine grinding. To increase Ball mill effective, the vertical coal mill or coarse powder mill can be setted before Ball mill as pre-grinding.

ball mill how to work

1、A preface

Since in 1880 in industrial production ceramic grinding materials used since the ball more than 100 years history, despite a few advanced countries due to material technology development and only used in ceramic production only plays the ball mill ingredients (mixed), but most of the countries in ceramic production is widely used for grinding mill with mixed casting glaze ceramic raw materials, and paints. However, the efficiency of the ceramic production of ball mill is lower -- about 1 %, so that a large amount of energy consumption. According to statistics, ceramic production in about 40 percent of the energy consumption in the ball grinding process. The ball mill process of material of particle shape and size distribution, the fineness, physical and chemical properties, production efficiency has important influence, this paper will be of ball mill process of related problems were discussed. The superficial

2 、the crushing mechanism of materials

Material in the ball mill process is shattered due to its body and abrasive abrasive results. However, the grinding process is extremely complex. If a single particles as research object, the ball mill process it may repeatedly by grinding compressive stress, which exists in the role of the particles on the surface of a new generation of inherent or expansion crack, and lead to its broken or plastic deformation. When the particles are constantly shattered. A certain level of new particles can be further ground, because the new particles on the surface of the crack, and appear a certain minimum fracture risk of crack stress reduced ACTS. When breaking process continues, the final for crushing stress could increase to make granules of plastic deformation degree. Now, with the plastic deformation, particle size is the will. Thus, when the materials are a grinding size limit. For raw materials, quartz can be ground for 1 micron in size limit, and as the extremum, limestone for 3 ~ 5 micron. That is, when the grinding materials into the scope of ultra-fine grinding mill, the effect was more difficult. In most of the grinding system has a real grind limit, this limit the main on grinding particles produced products, and the tendency to accumulate accumulate and broken up between the physical balance. Therefore, a long ball grinding extended time is meaningless, only leads to increased energy, because the meticulous grain can effectively storage needed to crack expansion of elastic energy.

The actual grinding process than the above discussion, the situation is much more complex particle surface crack expanding and new crack appear because each particle interaction among cracks, the sub-tissue particles interact with the wall, the function, the secondary role between particles and the effect with abrasive particles, particle physics and chemistry of the smell of particles and abrasive environments and aggravate, particle breaking. But, for the recognition of the essence of the visual sense or only on the basis of reasoning.

ball mill manufacturer in china

Different materials are used as media, including ceramic balls, flint pebbles and stainless steel balls. An internal cascading effect reduces the material to a fine powder. Industrial ball mills can operate continuously, fed at one end and discharged at the other end. Large to medium-sized ball mill  are mechanically rotated on their axis, but small ones normally consist of a cylindrical capped container that sits on two drive shafts (pulleys and belts are used to transmit rotary motion). A rock tumbler functions on the same principle. Ball mills are also used in pyrotechnics and the manufacture of black powder, but cannot be used in the preparation of some pyrotechnic mixtures such as flash powder because of their sensitivity to impact. High-quality ball mills are potentially expensive and can grind mixture particles to as small as 5 nm, enormously increasing surface area and reaction rates.
The Ball Millis a horizontal rotary drum apparatus driving by gears outside. It is a lattice pattern with two storage cells. The raw materials enter into the first cell of the Ball Millevenly through the quill shaft in charging part.

ball mill – grinidng mill