Overview Of LM Vertical Mill↑

LM series vertical mill named vertical roller mill is designed to solve some problems of traditional grinding mills. The remarkably ameliorating of SBM vertical mill is higher capacity and lower consumption. LM series vertical mill adopts reliable structure and reasonable process flow integrated with drying, milling, classifier, elevator. After in combination with the european technology and the market demand, it can fully meet the requirement of clients in the high production of powder. The economy indicator of our vertical mill reaches the international lever as well.

The Application Of LM Vertical Mill↑

LM series vertical mill can be widely used in cement making, power,metallurgy, chemical and nonmetalliferous ore industries. It can be used as coal mill, cement mill, iron ore mill, tantalite mill, copper ore mill, manganese mill, etc.This series vertical grinding mill used to grind lumpy, granular and powdery materials to the required size.

The Features & Benefit Of LM Vertical Mill↑

• Low Investment Cost
  This mill itself can crush, dry, grinding, classifying, so the system is simple, and occupation area is about 50% of ball mill system. In addition, it can be installed outside, so it will reduce a large number of investment costs.
• Low Operation Cost
  ⑴ High efficiency: roller compacted materials directly onto the grinding disc, so power consumption is low. Compared with ball mill, it saves energy consumption by 30% ~ 40%.
  ⑵ Less wear and tear: As the roller is not in direct contact with the disc, and material of the roller and liner is high quality, so life lime is long.
• High Drying Ability
  As the hot air inside contacts directly with the material, drying ability is higher, and it saves energy. By regulating the air temperature, it can meet requirements with diffirent humidity.
• Simple and reliable operation
  ⑴ It is equipped with automatic control systems, so remote control makes it easy to operate.
  ⑵ It is equipmented with one device,which prevents the roller from contacting with the liner directly, and avoids the destructive impact and severe vibration.
• The stability of product quality.
  As the material stays in the mill for a short time, it is easy to detect and control the product particle size and chemical composition, to reduce duplication of milling, stable product quality.
• Maintenance convenience
  By reparinging fuel tank, rotating the arm, it is fast to replace the roller sleeve, and liner, and reduce the downtime loss.
• Environmental protection
  It is with small vibration, low noise, and the overall sealing. The system works under negative pressure, so there is no dust going out. It meets the requirements of the state Environmental Protection.

Main Parts Of LM Vertical Mill↑

LM vertical mill is made up of feeding part, discharging part, gyre part, grinding table, decelerator, roller and so on.

Working Principle Of LM Vertical Mill↑

The motor of our vertical mill drives the grinding table through decelerator. When the materials fall down the center of grinding table from feed opening, hot air comes into the mill from the air inlet. Materials inside the vertical mill move to the edge of the grinding table due to the centrifugal force. When passing the groove on the grinding table,the materials are pulverized by the roller. The materials crushed by our vertical mill are brought up by vane high-speed airstream, at the same time the larger particles fall down to the grinding table for regrinding. The materials in the airstream pass the separator on the top of the vertical mill, while the coarse powder fall down the grinding table for regrinding under the function of rotation rotor. In this way,the fine powder comes out with the airstream,and is gathered by the dust catcher of the vertical mill. When the hot airstream inside the vertical mill meet the materials content with moisture,the latter will be dried.Through adjusting the temperature of the hot airstream, our vertical mill can meet different material’s requirement;Through adjusting seperator, our vertical mill can reach proper fineness of materials.

Specification Of LM Vertical Mill↑

LM Vertical Ore Mill

Model			LM130K	LM150K	LM170K	LM190K	LM220K	LM240K
Turnplate diameter (mm)			1300	1500	1700	1900	2200	2400
Capacity (t/h)			10~30	13~40	18~57	23~72	36~114	41~128
Final ore size		μm	170~45	170~45	170~45	170~45	170~45	170~45
		mesh	80~325	80~325	80~325	80~325	80~325	80~325
Final ore water percentage			≤1%	≤1%	≤1%	≤1%	≤1%	≤1%
Max. input size (mm)			<38	<40	<42	<45	<50	<55
Best water percentage of raw Ore			<4%	<4%	<4%	<4%	<4%	<4%
Drying needed if water percentage is more than			<15%	<15%	<15%	<15%	<15%	<15%
Input wind temperature (℃)			<350	<350	<350	<350	<350	<350
Output wind temperature (℃)			70~95	70~95	70~95	70~95	70~95	70~95
Main motor power (KW)			185~220	250~280	355~400	450~500	710~800	800~900
Overall dimension	L mm		3500	4200	4700	8500	10200	11700
	W mm		3400	3900	4500	5600	6700	7700
	H mm		5800	7100	8300	8800	10600	12200
Weight (t)			48	75	90	100	125	160

LM Vertical Coal Mill

Model		LM130M	LM150M	LM170M	LM190M	LM220M	LM240M
Turnplate diameter (mm)		1300	1500	1700	1900	2200	2400
Capacity (t/h)		10~15	16~22	20~28	26~35	35~45	40~50
Coal powder fineness (R0.08)		<15%	<15%	<15%	<15%	<15%	<15%
Coal powder water percentage		<1%	<1%	<1%	<1%	<1%	<1%
Max. input size (mm)		<38	<40	<42	<45	<50	<55
Input material water percentage		<15%	<15%	<15%	<15%	<15%	<15%
Input wind temperature (℃)		<350	<350	<350	<350	<350	<350
Output wind temperature (℃)		75~95	75~95	75~95	75~95	75~95	75~95
Raw coal Hardgrove grindability index (HGI)		>55	>55	>55	>55	>55	>55
Main motor power (KW)		185	250	315	400	500	560
Overall dimension	L mm	3500	4200	4700	8500	10200	11700
	W mm	3400	3900	4500	5600	6700	7700
	H mm	5800	7100	8300	8800	10600	12200
Weight (t)		46	75	94	100	122	157

Maintenance Of LM Vertical Mill↑

1, When the vertical roller mill working, you should observed the wind speed and input air, and they can not be too small.
2 Good control of material layer. If the material layer is too thick or too thin, it will cause the vertical mill shock.
3 The grinding materials can not have too large metal.
4 Keep the vertical mill’s main motor electric current and pressure gage steady.

Get Price About LM Vertical Mill↑

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Note: These data is just reference, any change is subject to the LM Vertical Mill product.