2012 High Output Good Performance Mining Ball Mill

2012 High Output Good Performance Mining Ball Mill Capacity:0.65-30t/h Fully ISO9001 Certification Suitable for mining.

1.Ball Mill Introduction

Ball Mill 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 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.

2.Ball Mill Application:

It is 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, spiral classifiers, cyclones and air classifiers are used for classifying the discharge from ball mills. Ball mill is an efficient tool for grinding many materials into fine powder. The ball mill is used to grind many kinds of mine and other materials, or to select the mine. It is widely used in building material, chemical industry, etc. There are two ways of grinding: the dry process and the wet process. It can be divided into tabular type and flowing type according to different forms of discharging material.

3.Ball mill Working Principle:

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.

4.Ball mill specification

Model	Speed of bucket(r/min)	Weightof ball	Size offeed opening(mm)	size of outputtingfeed (mm)	Production(t/h)	Power(kw)	Weight(T)
900×1800	38	1.5	≤20	0.075-0.89	0.65-2	18.5	3.6
900×3000	38	2.7	≤20	0.075-0.89	1.1-3.5	22	4.6
1200×2400	32	3.8	≤25	0 075-0.6	1.5-4.8	45	12.5
1200×3000	32	5	≤25	0.075-0.4	1.6-5	45	12.8
1200×4500	32	7	≤25	0.075-0.4	1.6-5.8	55	13.8
1500×3000	27	8	≤25	0.075-0.4	2-5	90	17
1500×4500	27	14	≤25	0.075-0.4	3-6	110	21
1500×5700	27	15	≤25	0.075-0.4	3.5-6	132	24.7
1830×3000	24	11	≤25	0.075-0.4	4-10	180	28
1830×6400	24	23	≤25	0.075-0.4	6.5-15	210	34
1830×7000	24	25	≤25	0.075-0.4	7.5-17	245	36
2200×5500	21	30	≤25	0.075-0.4	10-22	370	48.5
2200×6500	21	30	≤25	0.075-0.4	14-26	280	52.8
2200×7500	21	33	≤25	0.075-0.4	16-29	475	56

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2012 High Output Good Performance Mining Ball Mill