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Vertical Roller Mill

Vertical roller mill has two classic models, namely LM vertical mill and LUM ultrafine vertical roller mill.

LM Vertical Mill

LM vertical mill

  • Feed Granularity: 38-55mm
  • Production Capacity: 10-50t/h
  • Application Field: according to the structure of LM series vertical mill, it can be applied to the powder milling of cement, electric power, metallurgy, chemical industry, ore and other industries.
  • Materials: cement, coal, feldspar, calcite, talc, fluorite, iron ore, copper ore, phosphate rock, graphite, quartz, slag and so on.
LUM Vertical Roller Mill

LUM ultrafine vertical roller mill

  • Feed Granularity: less than 10 mm
  • Production Capacity: 5-18t/h
  • Application Field: according to the structure characteristics of LUM vertical roller mill, it is widely used in chemical, metallurgy, non-metallic mineral industry superfine grinding powder.
  • Materials: limestone, calcite, barite, talc, dolomite and other non-metallic ores and so on.

Vertical Roller Mill Structure

Vertical Roller Mill Structure And Parts

Grinding disc: including guide ring, wind ring, retaining ring, lining plate, disk, scraper plate and lifting device, etc..

Grinding roll: roll sleeve is easy to wear parts, requiring sufficient toughness and good wear resistance.

Flour separator

Pressure device: hydraulic device, accumulator.

Monitoring device: arm monitoring, vibration monitoring.

Transmission device: motor, reducer.

Water spraying system: reducing temperature and stabilizing material layer.

Coarse powder external circulation system: hoist.

Vertical Roller Mill Working Principle

Vertical Roller Mill In Working

There are many different forms of vertical mill, but the working principle is basically the same. All these forms of vertical roller mill with the grinding roller (or the equivalent of grinding roller grinding parts), grinding roll along the horizontal circular motion on the disc, the vertical pressure exerted on the grinding roller through the outer disc, the materials are subjected to shear and compression, and crushing.

The motor drives the disc to rotate by the reducer, the material from the feed opening to the central disc, under the action of centrifugal force to the disc edge mobile and by grinding roller compacted crushed material from disc separator is high speed upward airflow to mill and one of the coarse powder separator after the return to the disc re grinding.

The fine powder is then fed out with the gas and collected in the dust collecting system of the system, namely the product. In the vertical mill, the material needs a larger air velocity through pneumatic conveying, which can use waste heat gas to dry and grind at the same time.

Model LM130K LM150K LM170K LM190K LM220K LM130M LM150M LM170M LM190M LM220M LM130N LM150N LM170N LM190N LM220N
Wheel diameter(mm) 1300 1500 1700 1900 2200 1300 1500 1700 1900 2200 1300 1500 1700 1900 2200
Output (th) 10-30 13-40 18-57 23-72 36-110 10-15 16-22 20-28 26-35 35-50 5-14 7-20 8-27 9-30 18-55
Finish fineness µm 170-45 170-45 170-45 170-45 170-45   170-45 170-45 170-45 170-45 170-45
Mesh 80-325 80-325 80-325 80-325 80-325   80-325 80-325 80-325 80-325 80-325
Coal powder fineness (R0.08) 5-20% 5-20% 5-20% 5-20% 5-20%  
Coal powder moisture (%) <1% <1% <1% <1% <1%
End product 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 <10 <10 <10 <10 <10
Grinding material max feed size(mm) <38 <40 <42 <45 <50 <38 <40 <42 <45 <50 <38 <40 <42 <45 <50
Moisture of grinding material not to dry (%) <4% <4% <4% <4% <4% <4% <4% <4% <4% <4%
Matieral moisture of into mill (%) <15% <15% <15% <15% <15%
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% 4%-15%
Into mill air temperature (℃) <350 <350 <350 <350 <350 <350 <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 75-95 75-95 75-95 75-95 75-95 70-95 70-95 70-95 70-95 70-95
Raw coal hardgrove grindability index (HGI) >55 >55 >55 >55 >55
Main motor power (kw) 200 280 400 500 800 185 250 315 400 500 200 280 400 500 800
Contour dimension Length (mm) 5520 6550 7170 7580 8080 5520 6550 7170 7580 8080 5520 6550 7170 7580 8080
Width (mm) 2500 3070 3460 3320 4660 2500 3070 3460 3320 6700 2500 3070 3460 3320 4660
Height (mm) 7060 7560 8300 8960 9020 7060 7560 8300 8960 9020 7060 7560 8300 8960 9020
Model LUM1125 LUM1232 LUM1436
Wheel diameter(mm) 1100 1200 1400
Capacity (t/h) 5~12 7~16 8~18
Fineness 400~650Mesh ~D97 ~D97 ~D97
Material Size(mm) <10 < 10 <10
Moisture <3% <3% <3%
Main Motor Power(KW) 250 315 355
Roller(set) 3 3 3
Classifier Motor Power 15 KWx5 15 KWx7 15 KWx7