Ball mill is also called ball grinder mill or ball grinding mill, is a key mining equipment to grind the crushed materials, and is widely used in powder-making production line including cement industry, silicate, new-type building material, refractory material, fertilizer, ore dressing of ferrous metal and non-ferrous metal, glass ceramics, chrome and other mining industry.

Ball Mill is made up of feeding part, discharging part, transmission part (reducer, small transmission gear, motor, and electrical controller), gyre part and so on. SBM is a expert of ball mill manufacturer in China and supplies all kinds of ball roller mills . Now our grinder machines have been exported to many countries such as America, Turkey, Austrialia, Indonesia, Kyrgyzst, Kazakstan, United Arab Emirates, Ethiopia, Libya, Venezuela, Chile, India, Iran, Vietnam, Indonesia, Singapore and so on.

Ball mill can grind various ores, coal cement and other materials with dry process and wet process. There are two kinds of ball mill, grate type and overfall type due to different ways of discharging material.

Ball mill is a kind of common equipment and mainly applied in the the field of Mineral processing, ceramics, chemicals, cement, glass, refractories.And ball mill can be divided into two kinds of varities ,namely the dry and wet style .And the dry style is maily used in the fied of Refractories, cement, chemical fertilizer, glass;while the wet style is Mineral processing, ceramics, chemical industry.In recent years ,we company have developed the round bear transmitting with high-efficient and energy-saving,which can save by the enengy by 25- 30%.And it can also be divided into three kinds ,namely the cylinder ball mill,cone ball mill and tuba ball mil.

Ball mill is mainly used for grinding materials in cement industry, silicate product, new building materials, corhart, chemical engineering, nonferrous and black metal, mineral processing, glass and ceramic, etc. Ball mill is also used for grinding various ore and other grindable materials dry or wet. SBM is a famous ball mill manufacturer in China. The output is 0.5-30tph, and the finished size can be adjusted from 0.075-0.4mm.

1. Ball mill can be used to the grinder with or without moisture.
2. The inert gases can be charged into the machine to replace the air when it crush the explosive materials.
3. Reliable function and cheap grinder are convenient for the change.
4. Both the interval operation and the continous operation are avalible.
5. Better operation condition,and the crushing will proceed in the closed machine body with no dust.

Ball mill is a grinder for reducing hard materials to powder. A ball mill grinds material by rotating a cylinder with steel grinding balls/ceramic balls causing the balls to fall back into the cylinder and onto the material to be ground.

The cylinder rotates at a relatively slow speed, allowing the balls to cascade through the mill base, thus grinding or dispersing the materials. The rotation is usually between 4 to 20 revolutions per minute, depending upon the diameter of the mill. The larger the diameter, the slower the rotation.

If the peripheral speed of the mill is too great, it begins to act like a centrifuge and the balls do not fall back, but stay on the perimeter of the mill. The point where the mill becomes a centrifuge is called the "Critical Speed", and ball mills usually operate at 65% to 75% of the critical speed.

Ball mills are generally used to grind material 1/4 inch and finer, down to the particle size of 20 to 75 microns. To achieve a reasonable efficiency with ball mills, they must be operated in a closed system, with oversize material continuously being recirculated back into the mill to be reduced. Various classifiers, such as screens, cyclones and air classifiers are used for classifying the discharge from ball mills.

Ball Mill Technical Data

Model	Speed of bucket(r/min)	Weight of ball	Size of feed opening (mm)	Size of outputting feed (mm)	Production (tph)	Power (kw)	Weight (t)
Ф1830×3000	24	11	≤25	0.075-0.4	4-10	180	28
Ф1830×6400	24	23	≤25	0.075-0.4	6.5-15	210	34
Ф1830×7000	24	25	≤25	0.075-0.4	7.5-17	245	36
Ф2200×5500	21	30	≤25	0.075-0.4	10-22	370	48.5
Ф2200×6500	21	30	≤25	0.075-0.4	14-26	280	52.8
Ф2200×7500	21	33	≤25	0.075-0.4	16-29	475	56
Ф2400×3000	21.6	25.8	≤25	0.075-0.4	7.8-18	245	59.2

Note: This specification is just reference, any changes are subject to the ball mill products.

1. Before drive ball mill, check mechanical and electrical parts, check all connecting bolts if they are loose. Check each lubrication point if it is normal and the reliable transmission, protective equipment intact, electrical instruments are sensitive.
2. Turning a week to check whether the equipment moving parts or around obstacles, and eliminate. Not allowed to stand people around the boot.
3. After check correctly, you can press the start button to start the motor and should pay attention to current changes. Ball mill consecutive start no more than two times, the first and the second compartment for more than 5 minutes. If you start the ball mill third time, you must work with electricians, fitters with the exhaustive examination.
4. After the normal operation of ball mills, we must strictly follow prescribes to supply water and ore stone. The idle time of ball grinder mill is not more than 15 minutes, so as not to bash the liner.
5. During the operation we should pay attention to observe the current, voltage, feeding, water supply. Check once every half hour and the spindle motor temperature is not greater than 60 ° С, if it happensm, take timely treatment.
6. In the absence of notification power outage, the first step is to pull down disconnecting link, then press the stop button to stop to the mining and water supply.
7. After parked, cleaning equipment and sanitation, to ensure civilized production.