Cement Mill Overview

A cement mill is the equipment that used to grind the hard, nodular clinker from the cement kiln into the fine grey powder that is cement. Most cement is currently ground in ball mills.

Cement clinker is usually ground using a cement ball mill. This is essentially a large rotating drum containing grinding media - normally steel balls. As the drum rotates, the motion of the balls crushes the clinker. The drum rotates approximately once every couple of seconds.

Grinding systems are either 'open circuit' or 'closed circuit'. In an open circuit system, the feed rate of incoming clinker is adjusted to achieve the desired fineness of the product. In a closed circuit system, coarse particles are separated from the finer product and returned for further grinding.

Cement Mill Has A Wide Range Of Application

This cement ball mill is mainly used in grinding cement finished products and raw materials and also suited to metallurgical, chemical, electricity etc. and other industrial mining enterprises. It could also be used to grind various ore materials and materials that is grindability.

Cement Mill Benefits

1. Strong adaptability;
2. Continuous produce;
3. Broken rate large;
4. Easy to adjust the product grinding fineness etc;
5. It can not only produce with wet type, but also grind and dry simultaneously.

Working Principle of Cement Mill

Cement mill is a simplified level, out of the hollow shaft and grinding materials and other components, simplified for the long cylinder, cylinder equipped with a grinding, cylinder of steel plate, with steel liner and simplified fixed, grinding media generally steel ball, according to different tube diameters and a certain percentage of load in, section steel grinding media can also be used.

When the cylinder rotates, the material and the ball under the action of centrifugal force, close to the liner, due to the role of friction, the material and the ball into the cylinder a certain height, the gravity, the ball and materials while whereabouts of the ball crushing the material, while the relative liner material sliding friction occurs, the resulting abrasive material, grinding the material so as to achieve the purpose.

Material by the feeding device into the compound air evenly into the mill screw shaft first warehouse, the warehouse there are ladder liner or corrugated liner, built with different specifications steel ball, rotating cylinder produces centrifugal force to the ball a certain height After the fall, have severe impact on the material and abrasive. Coarse material in the first position to reach, after single-compartment plate into the second warehouse, the warehouse lined with flat lining, there are balls, the material to further grinding. Powder discharged through the discharge grate plate, complete the grinding operation.

Cylinder in the rotary process, the grinding phenomenon has slipped in the fall to the process of abrasive material in order to effectively use abrasive effect on the larger particle size is generally twenty head when finely ground, the body tube mill body with the diaphragm plate separated Sec, it becomes two-position, materials into the first position when the ball was crushed, the material into the second position when the end of the material for grinding steel, finely ground material passing from the discharge end of the discharge hollow shaft, the small particles of feed material for pulverized, as in II slag sand, coarse fly ash, mill shell could have no partitions, a single-chamber tube mill, grinding the volume of steel can also be segment.

Cement Mill Related Knowledge:

1. Cement Clinker Processing Plant
2. Cement Manufacturing Process Flow Chart

Technical Data

Cement Mill

Specification (Dia× Length)	Rotating speed (r/min)	Feed size (mm)	Capacity (t/h)	Grinding media load (t)	Main motor			Main reducer		Weight(t)
					Model	Power (kw)	Rotating speed (r.p.m)	Model	Reduction ratio
φ2.2×11	20.91	≤25	15～17	50	TR1512-8	570	740	Zd80	5.6	92
φ2.4×8	20.91	≤25	14～18	39.5～42	TRQ1512-8	570	740	Zd80-9	5	76.4
φ2.4×9	20.91	≤25	23～25 Closed circuit	50	TR1512-8	570	740	Zd80-9	5	91
φ2.4×10	20.91	≤25	16～22	50	TR1512-8	570	740	Zd80-9	5	111
φ2.4×11	21	≤25	Open circuit 19～24 Closed circuit 22～28	6265	YR710-8/1180	710	740	JDX630	5.6	125
φ2.4×12	21	≤25	Open circuit18～20 Closed circuit 21～23	6365	YR800-8/1180	800	740	MBY710	6.3	127
φ2.4×13	21	≤25	Open circuit21～22 Closed circuit 24～26	6668	YR800-8/1180	800	740	MBY710	6.3	131
φ2.6×10	20.6	≤25	21～24	64	YR800-8/1180	800	740	JDX710	6.3	140
φ2.6×13	20.6	≤25	28～31	81	YR1000-8/1180	1000	740	JDX800	6.3	158
φ3.0×9	19.13	≤25	40～45	85	YR1000-8/1180	1000	740	MBY800	7.1	148
φ3×11	18.92	≤25	44～47	95	YR1250-8/1430	1250	740	JDX900	7.1	177
φ3×12	18.92	≤25	48～52	103	YR1250-8/1430	1250	740	JDX900	7.1	182
φ3×13	18.92	≤25	39～45	116max	YR1400-8/1430	1400	740	JDX900	7.1	200.7
φ3.2×11	18.3	≤25	45～48	112max	YR1600-8/1430	1400	740	JDX900	7.15	213.6
φ3.2×13	18.7	≤25	50～55	133max	YR1600-8/1430	1600	740	JDX1000	7.15	237
φ3.4×11	18	≤25	45～55	120max	YR1600-8/1430	1600	740	JDX1000		230
φ3.5×13	17	≤25	60～65	156max	YR2000-8/1730	2000	740	TS130-A-F1		257.6
φ3.8×13	17	≤25	65～70	185	YR2500-8/1730	2500	740	DMG22/2500		313
φ4×13	16.3	≤25	78～80	191	YRKK900-80	2800	745	JS140-A		348
φ4.2×11	15.8	≤25	100～110	182～190	YR2800-8/17830	2800	740	JS140-A-F1D		350
φ4.2×13	15.2	≤25	110～120	230	YRKK1000-8	3350	740	MFY355-A		380
φ4.6×14	15	≤25	100～115	285	YR1000-8	4200	740	J3160-C		485

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