Introduction

LM series Vertical Roller Mill is an ideal equipement which have integrated the crushing,dry,powder grinding,and graded deliver into a single whole .And it can be used to crush the lump , particle and powder raw materials to the required powder materials .And now LM series Vertical Roller Mill has found its extensive application in the field of Cement, electric power, metallurgy, chemical industry, non-metallic mineral,etc.

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Vertical Roller Mill Working Principle

During the operation,the motor wil drive the plate to rotate by the reducer and then the materials will fall down on the central place of the plate from the inlet by the qir-locking feeder .While at the same time ,the hot air will enter the grinder from the air inlet.With the rotation of the plate ,the materials will move to the edge of the plate by the centrigugal force and the materials will received the pressure from the roller and be crushed when it passes the circle ring sink on the plate.The crushed materials will be brought away by the high speed air and the big size will fall down on the plate and be reginded .And the coarse powder will fall down from the cone hopper and then repeat this kind of process when materials in the air stream passes the upper seperator by the effect of the rotors.And during the process ,the fine powder will flow out with the air stream .By the dust catcher ,the final products will be collected .The materials with moisture will be dry when it contact with the hot air stream.By adjusting the temperature of the hot air,we can satisfy materials with various moisture degree ,thus achieving the required products moisture.By the seperator ,we can also achieve the required coarse and fine degree of the products .

Vertical Roller Mill Working Feature

Main structures of LM series Vertical Roller Mill are including the classifier ,roller ,plate,pressure ,reducer,motor,shell equipement and so on.The seperator is a kind of high-efficient and energy-saving equipement .And the roller is a kind of spare parts used to grind and crush the materials .The plate is installed on the output axis of the reducer ,which is the place the materials is crushed by the roller.And the pressure equipment is a kind of spare parts providing the pressure to the grinding roller ,thus crushing the materials .

Vertical Roller Mill Advantages

1.low investment cost: This series of grinder have integrated the crushing ,dry, powder grinding and the graded transmitting into the single whole ,whose cover area is just 50% of the ball mill system.
2.low operation cost: (1)The roller can directly grind and crush the materials on the grinding plate ,whose consumption is just 30%-40% of the ball mill system. (2)low wearing consumption : The roller and the plate adopts the quality materials ,which have reduced the wearing consumption and expand the service life .
3.The hot air will contact with the materials in the grinder ,with strong dry ability and energy-saving. And by adjusting the temperature of the hot air , it can meet the requirements of materials with various degrees of moistures.
4.Reliable function: (1)Automatic control system realize the remote control and the convenient operation. (2)The equipement have been installed on the roller and the grinding plate ,which can avoid the destructive shock and the shake .
5.Hort stay in the grinder and convenient to inspect and control the particle size and the chemical components ,which have reduced repeating grinding and improved the products’ stability.
6.By inspecting the oil cylinder and turning over the can flexible arm ensure the convenient change of the roller sheet and the plate ,which have reduced the down-time lost.

Vertical Roller Mill Technical Parameters

Model		LM130K	LM150K	LM170K	LM190K	LM220K	LM240K
Medium diameter of the plate（mm）		1300	1500	1700	1900	2200	2400
capacity（t/h）		10~30	13~40	18~57	23~72	36~114	41~128
Finished size	μm	170~45	170~45	170~45	170~45	170~45	170~45
	Item	80~325	80~325	80~325	80~325	80~325	80~325
Humid of the finished		≤1%	≤1%	≤1%	≤1%	≤1%	≤1%
Max feeding size（mm）		<38	<40	<42	<45	<50	<55
Best Humidity of Raw		<4%	<4%	<4%	<4%	<4%	<4%
Drying Humidity amount of Raw material		<15%	<15%	<15%	<15%	<15%	<15%
Air Inlet Temperature（℃）		<350	<350	<350	<350	<350	<350
Air outlet Temperature（℃）		70~95	70~95	70~95	70~95	70~95	70~95
Power of（KW）		185~220	250~280	355~400	450~500	710~800	800~900
Overall Dimension	Lengthmm	3500	4200	4700	8500	10200	11700
	Widthmm	3400	3900	4500	5600	6700	7700
	Heightmm	5800	7100	8300	8800	10600	12200
Weight（t）		48	75	90	100	125	160

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

 

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