LM Vertical Roller Mill (600-45μm)

Vertical Roller Mill is our newly-launched product which is applied as a solution to the technical issues such as low output and high energy consumption in the ordinary industry. This new type product is developed based on years of production and development on the pulverizer through analyzing and researching the strengths and weakness of both foreign and domestic products of its kind. Its performance has entered into the leading level among the international products of its kind. Vertical Roller Mill is a new type advanced pulverizing equipment featuring good performance and drying function. Integrated with drying, pulverizing and powder-selection, Vertical Roller Mill is widely applied in cement, chemical, coal and electric power industries. It has become the mainstream equipment in the pulverizing industry.

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LM Mill

Technical Advantages

Small Comprehensive Investment

The equipment integrates the functions of crushing, drying, grinding, powder separating and transportation, featuring simple system and compact layout, with the floor space of about 50% of that of the ball-milling system. And it can be arranged outdoors so as to greatly reduce the investment costs.

Low Operating Costs

Less wear: The roller does not contact the grinding plate directly and the roller and grinding plate are made of high-quality materials. Therefore, they enjoy longer service life and less wear.
High efficiency: The grinding rollers can directly grind materials on the grinding plate, featuring lower energy consumption (30% ~ 40% lower than that of ball-milling systems).

Automatic Control System

The equipment is provided with an expert automatic control system, realizing free switching between remote and local control to achieve easy operation and save labor costs.

High Environmental Protection Standard

The equipment can operate stably with little vibration, so its noise is fairly low.
The system is wholly sealed and works under negative pressure, free of dust spillover and environmentally friendly, with the emission meeting the national standard.

Working principle

The main motor drives the grinding plate by the reducer, simultaneously the hot air enters the vertical mill body from the air inlet and the materials drop on the grinding plate center from the feed opening and evenly move outwards due to centrifugal force. The materials are ground by grinding rollers when passing through the grinding area on the grinding plate, and large size materials will be directly crushed while the fine materials will form a material bed by extrusion for further inter granular crushing. The crushed materials will continue to move towards the mill edge until being taken away by the strong air flow at the vane and collected by the dust collector, while larger material particles will again fall onto the grinding plate for repeated grinding; the coarse particles in the air flow will drop back onto the grinding plate for further grinding when passing through the upper separator under the action of the rotor blade, with the qualified fine powder flowing out of the grinding plate with the air flow and then collected and discharged by the system powder collector as finished powder product. However, the iron blocks and other wastes mixed in the materials will move along with the materials towards the edge of the grinding plate due to their own weight and fall into the lower chamber and then be discharged out of the slag discharge opening by the scraping plate at the bottom of the mill tray (commonly known as scumming).

Main specification

Vertical Mineral Mill Series

Models and parameters		Vertical Mineral Mill Series
Models and parameters		LM130K	LM150K	LM170K	LM190K	LM220K	LM280K
Plate diameter (mm)		1300	1500	1700	1900	2200	2800
Capacity (t/h)		10-28	13-38	18-48	23-68	36-105	50-170
Output fineness	μm	170-40	170-40	170-40	170-40	170-45	170-45
Output fineness	Mesh	80-400	80-400	80-400	80-400	80-325	80-325
Max feed size(mm)		<38	<40	<42	<45	<50	<50
Main motor (kw)		200	280	400	500	800	1250

Vertical Coal Mill Series

Models and parameters	LM80M	LM110M	LM130M	LM150M	LM170M	LM190M	LM220M	LM240M	LM280M
Plate diameter (mm)	800	1100	1300	1500	1700	1900	2200	2400	2800
Grinding roller (piece)	2	2	2	2	2	2	2	3	3
Capacity (t/h)	3~5	5~9	10~17	16~22	20~30	26~40	35~50	50~65	60~90
Coal powder fineness (R0.08mm)	5~20%	5~20%	5~20%	5~20%	5~20%	5~20%	5~20%	5~20%	5~20%
Max feed size(mm)	<30	<30	<38	<40	<42	<45	<50	<50	<50
Main motor (kw)	55	110	185	250	315	400	500	710	900

Vertical Slag Mill Series

Models and parameters		Vertical Slag Mill Series
Models and parameters		LM130N	LM150N	LM170N	LM190N	LM220N	LM280N
Plate diameter (mm)		1300	1500	1700	1900	2200	2800
Capacity (t/h)		10-28	13-38	18-48	23-68	36-105	50-170
Output fineness	μm	170-40	170-40	170-40	170-40	170-45	170-45
Output fineness	Mesh	80-400	80-400	80-400	80-400	80-325	80-325
Max feed size(mm)		<38	<40	<42	<45	<50	<50
Main motor (kw)		200	280	400	500	800	1250

Vertical Fine-powder Mill Series

Models and parameters	LM130X-GX	LM150X-GX	LM170X-GX	LM190X-GX	LM220X-GX
Plate diameter (mm)	1300	1500	1700	1900	2200
Grinding roller (piece)	3	3	3	3	3
Max feed size(mm)	10	20	20	20	20
Output fineness (D97)	325~600 mesh	325~600 mesh	325~600 mesh	325~600 mesh	325~600 mesh
Capacity (t/h)	4~12	6~14	8~20	13~26	15~30
Powder classifier (kw)	45	55	75	90	110
Main motor (kw)	220	280	400	500	560

Vertical Pre-grinding Mill Series

Models and parameters	LM150Y	LM170Y	LM190Y	LM250Y	LM340Y
Plate diameter (mm)	1500	1700	1900	2500	3400
Grinding roller (piece)	2	2	2	3	3
Max feed size(mm)	20	20	20	20	20
Feed Capacity (t)	15~25	25~40	35~50	80~120	200~250
Output fineness 1 (R0.08mm)	≤15%	≤15%	≤15%	≤15%	≤15%
Output capacity 1 (t/h)	6~10	10~16	14~20	32~48	80~100
Output fineness 2 (R0.2mm)	≤5%	≤5%	≤5%	≤5%	≤5%
Output capacity 2 (t/h)	9~15	15~24	21~30	48~72	120~150
Mill cycle throughput (t/h)	60~100	100~160	140-200	320-480	800-1000
Main motor (kw)	280	450	560	1400	2500

LM Vertical Roller Mill (600-45μm)

Technical Advantages

Small Comprehensive Investment

Low Operating Costs

Automatic Control System

High Environmental Protection Standard

Working principle

Case

Hebei lime grinding production line with output of 400,000 tons per hour

Zhejiang calcite-limestone ultrafine powder production line with annual output of 100,000 tons

Gansu bituminous coal grinding production line with annual output of 200,000 tons