LM Vertical Grinding Mill

LM Vertical Grinding Mill

LM series grinding mill is my company in the relevant vertical grinding mill technology is more and more mature, technical advantages of vertical mill products increasingly prominent situation, actively learn from the successful experience of foreign countries, and constantly upgrading technology innovation through R & D team, launched with independent intellectual property rights of the vertical grinding mill products.

Detailed introduction

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Detailed introduction

  • 1. Energy saving environmental protection without pollution
    Equipment, small vibration, low noise. The whole equipment sealing, the system works under negative pressure, no dust, clean environment, to meet the requirements of national environmental protection.
  • 2. Operation and maintenance more convenient
    Equipped with PLC/DCS automatic control system, can realize remote control, simple operation. Through repairing cylinder, turning arm, replacing the roller sleeve, the lining board is convenient and fast, reduce downtime losses.
  • 3. Products stable quality high
    The short residence time of material in the mill, easy to detect and control the product size and chemical composition, reduces repeated grinding, more stable product quality. No direct contact with the roller sleeve and a liner plate, iron content in the product and contained few, mechanical wear iron easy to remove, used for grinding white or transparent material, the whiteness of the product with high purity. Arranged for preventing roller sleeve and disc lining board in direct contact with the limit device, avoid destructive shock and vibration, therefore the quality and stability of the finished product to ensure significant.
LM Vertical Grinding Mill
Model LM
130K		 LM
150K		 LM
170K		 LM
190K		 LM
220K		 LM
130M		 LM
150M		 LM
170M		 LM
190M		 LM
220M		 LM
130N		 LM
150N		 LM
170N		 LM
190N		 LM
220N
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%
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

[Feed size] : 38-55mm
[Capacity]: 10-50T / h
[Applications]: for cement, power, metallurgy, chemical, minerals and other materials milling industry. (More applications available online free consultation)
[Applicable materials] : cement, coal, feldspar, calcite, talc, fluorite, iron ore, copper, phosphate rock, graphite, quartz and slag.

Working principle

The main motor drives the disc through the speed reducer to rotate, and the hot air from the air inlet into the vertical mill body, disc material falling in the central through the feed port, under the action of centrifugal force, the material from the disc center to the edge of uniform movement, after grinding roller area the disc, by grinding roller compacted, large material crushed the fine-grained material is extruded, formed after the bed of interparticle breakage. The crushed materials continue to move to the edge of the grinding disc, until the wind was strong airflow at ring away, by the air flow with material, large granular material under the self gravity action again fell to the disc to smash, the remaining material with airflow into efficient dynamic separator in powder grading, in high dynamic separator the role of the leaves, do not meet the fineness requirement of material back to the millstones for grinding fineness, and meet the requirements of the material with gas flowing through the pipes into the pulse dust collector in the collection, through the discharging device is discharged into the finished product powder. The host within the mixed material such as iron hard abrasive debris along with the material moves to the edge of the grinding disc, due to its own weight and can not be blown up by the wind, to be installed in the millstone mill inferior at the bottom of the scraping plate scraping discharging port, discharging the external host.

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