Vertical Mill

• sjhl

Vertical Mill (vertical mill) is a new equipment featured by energy-saving and wide application, which may be used in electric power, cement, chemical, non-metallic minerals and other industries, especially suitable for grinding black raw materials and white cement plant to prepare raw materials. It has been widely used in the cement industry and non-metallic mineral industry at home and abroad with the advantages of low power consumption, high efficiency, large drying capacity, easily adjusted product fineness, uniform particle size, easily controlled chemical composition, low noise, no dust, low abrasion, simple system process, small occupied area, and low investment. 

1. Main structure and functions 

RHM and PRM vertical mills are mainly composed of separators, grinding discs, grinding rollers, compression devices, motors, reducers, shells and other parts.

The separator is an important component that determines the fineness of the product, which is composed of a speed-adjustable transmission device, wheels, air guide blades, shells, coarse powder blanking cone buckets, air outlets, etc., which is similar to the working principle of the powder separator. 

The grinding disc is fixed on the output shaft of the reducer, and the upper part of the grinding disc is a material bed that has an annular groove.

The grinding roller is the main component for rolling and grinding the materials. Two pairs of grinding rollers are set in the mill, and each pair of grinding rollers is installed on the same shaft, and rotates at different speeds. 

The compression device is a component that provides grinding pressure, which is composed of a hydraulic cylinder rod, a high-pressure oil station, an accumulator, etc., which may apply sufficient pressure to the grinding roller to crush the material. 

In addition to transmitting power, the reducer also has to bear the weight of the grinding disc and the grinding force. 

Specifications and Main Technologies of LQ vertical Mill  (Table I)

Unit Specification Parameter		LQ1100	LQ1250	LQ1300	LQ1700	LQ2300	LQ2500
Yield (cement raw material)	T/H	10-12	16-18	20-25	20-25	40-45	50-58
Particle size of materials when entering the mill	MM	0-40	0-40	0-40	0-40	0-50	0-50
Moisture of materials when entering the mill	%	<15	<15	<15	<15	<15	<15
Fineness of product R0.08	%	8-12	8-12	8-12	8-12	8-12	8-12
Moisture of product	%	<1	<1	<1	<1	<1	<1
Main motor power	KW	115	155	200	315	400	450
Wind temperature when entering the mill	℃	<450	<450	<450	<450	<450	<450
Wind temperature when out of the mill	℃	80-100	80-100	80-100	80-100	80-100	80-100
Air volume when out of the mill	M/H	20000	30000	40000	40000	80000	10000
Others

 

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