Vertical roller mill

The vertical mill produced by our company is devoted to the resolve of energy-consumption in the industrial grinding mill. And after years’ designing and development , we first-class expert have developed this kind of new grinding equipment with high-efficiency and wide application. And the vertical mill have also adopt the novel powder grinding principle ,reasonable structure and high anti-abrasion alloy materials .And this kind of vertical mill have absorbed many kinds of powder manufacturing technology and every performance of the vertical mill have greatly over the traditional powder grinding equipment ,particular to the materials with high hardness and processing. And this kind of vertical mill can be processed by two ways of with or without the moisture.

Application of Vertical roller mill

This kind of vertical mill have found their extensive application in the field of fertilizer, mining, building materials, chemical industry, metallurgy, thermal power, nonmetal, abrasive, brick, ceramic, steel, coal, etc .And the vertical mill can also be used to crush the block materials into the coarse powder( fine powder, the mixture of fine and medium sand ),such as cement (raw clinker), quartz, feldspar, calcite, gypsum, limestone, coal gangue, slag, talc, granite, feldspar, marble, barite, ceramics, glass ,etc. And these are all high, medium, and low hardness materials with the Mohs hardness of below 9.5%.

Working principle of Vertical roller mill

During the operation of the Vertical Mill, the reducer installed on the top of the main units will rotate with the central axis connected with the couplings .And then the central axis will drive the grinding roller cradle to rotate and the grinding roller installed on the cradle will roll around the inner surface of the grinding ring .And the materials will enter the feeding hopper from the side top of the machine and then be divided into two parts. And then the materials will scatter around the distributing plate which rotate with the central axis and then will be evenly entered the space between the grinding ring and roller along with the circle tunnel. And at last, the materials will be grinded and crushed by the roller and then be discharged by the outlet.

Structure features of Vertical roller mill

Main structures of LM series Vertical Mill are including the classifier , roller ,plate, pressure ,reducer, motor, shell equipment and so on.

The separator is a kind of high-efficient and energy-saving equipment .And the roller is a kind of spare parts used to grind and crush the material. And the pressure equipment is a kind of spare parts providing the pressure for the grinding rolle, thus crushing the materials .The plate is installed on the output axis of the reducer, which is the place the materials is crushed by the roller.

Technical advantages of Vertical roller mill

1. The vertical mill adopts novel principle of roller pressure powder grinding and the scientific design. And the Vertical Mill have also absorbed multi-pregrinding technology and have the prominent advantages than the traditional vertical mill, fine crushing mill, roller pressure and other kinds of impact crusher, which have really realized the pregrinding technology’s high-efficiency ,energy-saving and environment-friendly.

2. Short stay in the vertical mill: the regrinding time will be reduced and the products quality is stable.

3. This kind of vertical mill can adjust the hot wind temperature and features high dryer capacity and energy-saving.

4. The roller shaft and grinding plate of the Vertical Mill have been installed the anti-direct touch equipment, which can avoid the destructive impact and strong shaking.

5. With the compact structure, the vertical mill has integrated the dryer, powder grinding, and grading into a single whole.

6. The roller and the plate of the Vertical Mill adopts the quality materials, which have reduced the wearing consumption and expand the service life.

7. The equipment of Vertical Mill has the whole sealing system, which have realized the function under the negative pressure, no dust and environment pollution.

8. The Vertical Mill features better mechanical performance, simple operation, convenient maintenance, low wearing parts and long service life.

Vertical roller mill technical data

Model		LM130K	LM150K	LM170K	LM190K	LM220K	LM240K
Rotate Median Diameter (mm)		1300	1500	1700	1900	2200	2400
Capacity ( t/h)		10~30	13~40	18~57	23~72	36~114	41~128
Product Size	mm	170~45	170~45	170~45	170~45	170~45	170~45
	mm	80~325	80~325	80~325	80~325	80~325	80~325
Moisture		≤1%	≤1%	≤1%	≤1%	≤1%	≤1%
Max Feeding Size ( mm)		<38	<40	<42	<45	<50	<55
Moisture of Feeding Material		<4%	<4%	<4%	<4%	<4%	<4%
Moisture Should Be Dry		<15%	<15%	<15%	<15%	<15%	<15%
Temperature of Inlet (℃)		<350	<350	<350	<350	<350	<350
Temperature of Outlet (℃)		70~95	70~95	70~95	70~95	70~95	70~95
Power of Main Motor(kW)		185~220	250~280	355~400	450~500	710~800	800~900
Overall Dimension	Length(mm)	3500	4200	4700	8500	10200	11700
	Width(mm)	3400	3900	4500	5600	6700	7700
	Height (mm)	5800	7100	8300	8800	10600	12200
Weight (t)		48	75	90	100	125	160

Vertical Coal Mill Model and Technical Date

Model		LM130M	LM150M	LM170M	LM190M	LM220M	LM240M
Rotate Median Diameter (mm)		1300	1500	1700	1900	2200	2400
Capacity ( t/h)		10~15	16~22	20~28	26~35	35~45	40~50
Product Size ( R0.08)		<15%	<15%	<15%	<15%	<15%	<15%
Moisture		<1%	<1%	<1%	<1%	<1%	<1%
Max Feeding Size (mm)		<38	<40	<42	<45	<50	<55
Moisture of Feeding Material		<15%	<15%	<15%	<15%	<15%	<15%
Temperature of Inlet (℃)		<350	<350	<350	<350	<350	<350
Temperature of Outlet (℃)		75~95	75~95	75~95	75~95	75~95	75~95
Hardgrove Grindability Index (HGI)		>55	>55	>55	>55	>55	>55
Power of Main Motor ( kW)		185	250	315	400	500	560
Overall Dimension	Length (mm)	3500	4200	4700	8500	10200	11700
	Width(mm)	3400	3900	4500	5600	6700	7700
	Height(mm)	5800	7100	8300	8800	10600	12200
Weight ( t)		46	75	94	100	122	157