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Grinding Equipment

LM Vertical Roller Mill

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LM Vertical Roller Mill

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Product description

Parameters

Input Size: 0-70mm

Capacity: 3-340TPH

Material: Limestone, calcite, dolomite, petroleum coal, gypsum, barite, marble, talc, coal powder, etc.

Working Principle

The grinding plate rotates under the action of main motor of LM Vertical Grinding Mill and the reducer. Meanwhile, hot wind enters the vertical mill. After raw materials fall onto the center of grinding plate, they move to the edge of grinding plate under the action of centrifugal force. While passing through the grinding area between roller and grinding plate, bulky materials are broken directly by the pressure of roller while fine materials form a layer where materials crush each other. Broken materials after grinding continue moving to the edge of grinding plate until they are brought away by the airflow at the air ring. For coarse materials which cannot be brought away would fall onto the grinding plate for another grinding. When passing the upper separator, materials in the air flow will be divided into two parts by the blades of rotor, that is, coarse particles and fine powders. Coarse particles would be sent back to have another grinding while the qualified fine powders enter the powder collector with airflow as finished products. For sundries like iron block in materials, when they move to the fringe of grinding plate, because of their heavier weight, they would drop to the lower cavity of grinding mill and next be sent into the discharging port by scarper installed at the bottom of grinding plate and finally be discharged out of the grinding mill.

Features

1.Low running costs

It adopts the technology that vertical roller grind material directly on the disc, with low energy consumption; for the roller is not contact with the disc directly in the work, and the roller and liner are made by quality materials, it is of less wear and long life.

2.Simple and reliable operation

Its automatic control system can reach remote control, which is easy to operate; there is the device to prevent roller sleeve contact with disc liner directly, and avoid the destructive impact and severe vibration; we can turn the rotating arm by repairing fuel tank, replace the roller and liner are more convenient, which can reduce the downtime.

3.Energy conservation and environmental protection

It features small vibration, low noise, and sealing device as a whole, and the system also works with no pressure and dust spills.

Technicaldata

Vertical Mineral Mill Series

Model

LM80K

LM110K

LM130K

LM150K

LM170K

LM190K

LM220K

LM240K

LM280K

LM340K

LM370K

Wheel diameter(mm)

800

1100

1300

1500

1700

1900

2200

2400

2800

3400

3700

Output (th)

4-10

5-15

10~28

13~38

18~48

23~68

36~105

40-130

50~170

80-240

120-300

Finish fineness

μm

170-45

Mesh

80-325

End product moisture (%)

≤1%

Grinding material particle size D80 (mm)

<10

Grinding material max feed size(mm)

<20

<25

<38

<40

<42

<45

<50

<70

Moisture of grinding material not to dry (%)

<4%

Moisture of grinding material need to dry (%)

4~15%

Into mill air temperature (℃)

<350

Out of the mill air temperature (℃))

70~95

Main motor power (kw)

110

200

280

400

500

800

1000

1250

1800

2500

Vertical Coal Mill Series

Model	LM80M	LM110M	LM130M	LM150M	LM170M	LM190M	LM220M	LM240M	LM280M	LM340M
Wheel diameter(mm)	800	1100	1300	1500	1700	1900	2200	2400	2800	3400
Output (th)	3-5	7-10	10-17	16-22	20-30	26-40	35-45	50-70	70-90	100-140
Coal powder fineness (R0.08)	5~20%	5~20%	5~20%	5~20%	5~20%	5~20%	5~20%	5~20%	5~20%	5~20%
Coal powder moisture (%)	<1%	<1%	<1%	<1%	<1%	<1%	<1%	<1%	<1%	<1%
Grinding material particle size D80 (mm)	<10	<10	<10	<10	<10	<10	<10	<10	<10	<10
Grinding material max feed size(mm)	20	25	<38	<40	<42	<45	<50	<50	<50	<50
Material moisture of into mill (%)	<15%	<15%	<15%	<15%	<15%	<15%	<15%	<15%	<15%	<15%
Into mill air temperature (℃)	<350	<350	<350	<350	<350	<350	<350	<350	<350	<350
Out of the mill air temperature (℃)	75~95	75~95	75~95	75~95	75~95	70~95	75~95	75~95	75~95	70~95
Raw coal hardgrove grindability index (HGI)	>55	>55	>55	>55	>55	>55	>55	>55	>55	>55
Main motor power (kw)	45	90	185	250	315	400	500	630	900	1400

Vertical Slag Mill Series

Model		LM130N	LM150N	LM170N	LM190N	LM220N	LM240N	LM280N	LM340N	LM370N
Wheel diameter(mm)		1300	1500	1700	1900	2200	2400	2800	3400	3700
Output (th)		5-14	7-20	9-27	12-30	18-55	25-60	40-90	60-120	70-160
Finish fineness	μm	170~45	170~45	170~45	170~45	170~45	170~45	170~45	170~45	170~45
Finish fineness	Mesh	80~325	80~325	80~325	80~325	80~325	80~325	80~325	80~325	80~325
Slag fineness (㎡/kg)		420	420	420	420	420	420	420	420	420
End product moisture (%)		≤1%	≤1%	≤1%	≤1%	≤1%	≤1%	≤1%	≤1%	≤1%
Grinding material particle size D80 (mm)		<10	<10	<10	<10	<10	<10	<10	<10	<10
Grinding material max feed size(mm)		<38	<40	<42	<45	<50	<50	<50	<70	<70
Moisture of grinding material not to dry (%)		<4%	<4%	<4%	<4%	<4%	<4%	<4%	<4%	<4%
Moisture of grinding material need to dry (%)		4~15%	4~15%	4~15%	4~15%	4~15%	4~15%	4~15%	4~15%	4~15%
Into mill air temperature (℃)		<350	<350	<350	<350	<350	<350	<350	<350	<350
Out of the mill air temperature (℃)		70~95	70~95	70~95	70~95	70~95	70~95	70~95	70~95	70~95
Main motor power (kw)		200	280	400	500	900	1120	1800	2500	3150