Beneficiation Machine

Ball Mill

Ball Mill


Introduction of Ball Mill
Ball mill is an energy-saving grinding device, is widely used in mineral processing, building materials and chemical industries. It grinds material by rotating a cylinder with steel grinding balls, causing the balls to fall back into the cylinder and onto the material to be ground. The rotation is usually between 4 to 20 revolutions per minute, depending upon the diameter of the ball mill machine. The larger the diameter is, the slower the rotation is. If the peripheral speed of the ball grinding 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.

Ball mill is the key equipment for re-crushing the materials after they are primarily crushed. Ball mill is widely used for the dry type or wet type grinding of all kinds of ores and other grind-able materials in cement, silicate product, new building material, refractory, fertilizer, black and non-ferrous metals and glass ceramic industry.

Ball Mill Machine Structure

Ball Mill machine is composed by feeding part, discharging part, turning part and driving part (reducer, small driving gear, electric motor and electric control). The quill shaft adopts cast steel part and the liner is detachable. The turning gearwheel adopts casting hobbling process and the drum is equipped with wear-resistant liner, which has good wear-resistance. The ball grinding mill is with stable and reliable working condition. Moreover, according to different materials and discharging methods, there are dry ball mills and wet ball mills for choice.

Ball Mill Application
Ball mills are the key equipment for grinding after the crushing process, which is widely used in the manufacture industries, such as cement, silicate, new building material, refractory material, fertilizer, ferrous metal, nonferrous metal and glass ceramics and can be used for the dry and wet grinding for all kinds of ores and other grind-able materials. To achieve a reasonable efficiency with ball grinding 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, spiral classifiers, cyclones and air classifiers are used for classifying the discharge from ball mills.

Working Principle of Ball Mill
This machine is a horizontal type cylinder rotary device and outside the cylinder there is drive gear which drives the cylinder to rotate during the working process. Materials spirally and evenly go into the first cabin of the grinding machine through the feeding hollow shaft from the feeding device, and inside the first cabin, there are ladder lining boards or ripple lining board in which there are many steel balls with different specifications. The cylinder rotates and produces eccentric force to bring the steel balls to a certain height, and then the steel balls will fall down to impact and grind the materials. After being coarsely ground in the first cabin, the materials will go through the single-layer partition board and into the secondary cabin in which there are flat lining board, and in the lining board there are steel balls to further grind the materials. Finally the powdery materials will be discharged from the discharging grating bar to complete the powder grinding process.

Ball Mill Features
· Continuous operation and large capacity.
· High utilize ratio and low consumption of modifying agent
· With the function of modifying and dispersion, it fits for various powders.
· High modifying efficiency without changing the granulate shape.
· Excellent sealing system, no environment pollution
· All works are finished in one machine, easy to operate.

Technical Parameters



Model Cylinder
Diameter
(mm)
Cylinder
Length
(mm)
Motor Model Motor
Power
(kW)
Motor
Revolution
(r/min)
Length
(mm)
Width
(mm)
Height
(mm)
Capacity
(t/h)
Effective
Volume
(m3)
Weight
(kg)
MBY0918 900 1800 Y225M-8 22 730 4980 2370 2020 0.62~3.2 0.9 5700
MBY0924 900 2400 Y250M-8 30 730 5670 3280 2020 0.81~4.3 1.2 5880
MBY1224 1200 2400 Y280M-8 45 730 6450 2800 2500 0.4 ~4.9 2.28 12308
MBY1530 1500 3000 JR125-8 95 725 7935 3185 2280 5 19990
MBYg1530 1500 3000 JR117-8 80 725 7253 3070 2280 2.4 ~7.5 5 21210
MBYg2130 2100 3000 JR136-8 180 735 8122 4220 3073 14 ~35 9 42123.5
MBYg2136 2100 3600 JR137-8 210 735 8958 4320 3025 43 ~61 10.8 45800.5
MBYg2430 2400 3000 JR138-8 280 735 9004.5 4836.4 3490 11.5 55795
MBYg2732 2700 3200 JR157-8 320 750 10509 5000 3620 15.7 83110
MBYg2736 2700 3600 JR158-8 380 743 10764 5750 3620 32 ~86 17.7 90441
MBY2740 2700 4000 TDMK400-32 400 187.5 12300 5700 4700 43~110 20.4 75000
MBY3040 3000 4000 JR1510-8 570 740 9800 3900 3900 54~135 26 90000
MBY3245 3200 4500 TDMK800-36 800 167 14600 7000 5300 64~180 31 113000
MBY3645 3600 4500 TDMK1250-40 1250 150 15200 8800 6800 80~230 41.8 139000
MBY3654 3600 5400 TDMK1600-40 1600 150 15900 8800 6800 100~250 49.7 150000

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