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.


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.
The system design is simple and reasonable, saving unnecessary equipment investment so as to reduce total investment of the equipment.

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).

Case

Main specification

Vertical Mineral Mill Series

Models and parameters Vertical Mineral Mill Series
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
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
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
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

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