LM Vertical Roller Mill
Working Principle
The grinding plate rotates under theaction 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 ofgrinding plate, they move to the edge of grinding plate under the action ofcentrifugal force. While passing through the grinding area between roller andgrinding plate, bulky materials are broken directly by the pressure of rollerwhile fine materials form a layer where materials crush each other. Brokenmaterials after grinding continue moving to the edge of grinding plate untilthey are brought away by the airflow at the air ring. For coarse materialswhich cannot be brought away would fall onto the grinding plate for anothergrinding. When passing the upper separator, materials in the air flow will bedivided into two parts by the blades of rotor, that is, coarse particles andfine powders. Coarse particles would be sent back to have another grindingwhile the qualified fine powders enter the powder collector with airflow asfinished products. For sundries like iron block in materials, when they move tothe fringe of grinding plate, because of their heavier weight, they would dropto the lower cavity of grinding mill and next be sent into the discharging portby scarper installed at the bottom of grinding plate and finally be dischargedout of the grinding mill.
Features
1. Low running costs
It adopts the technology that verticalroller grind material directly on the disc, with low energy consumption; forthe roller is not contact with the disc directly in the work, and the rollerand liner are made by quality materials, it is of less wear and long life.
2. Simple and reliable operation
Its automatic control system can reachremote control, which is easy to operate; there is the device to prevent rollersleeve contact with disc liner directly, and avoid the destructive impact andsevere vibration; we can turn the rotating arm by repairing fuel tank, replacethe roller and liner are more convenient, which can reduce the downtime.
3. Energy conservation and environmentalprotection
It features small vibration, low noise,and sealing device as a whole, and the system also works with no pressure anddust spills.
Technical data
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 | 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 | 80-325 | |
End product moisture (%) | ≤1% | ≤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 | |
Grinding material max feed size(mm) | <20 | <25 | <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% | <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% | 4~15% | 4~15% | |
Into mill air temperature (℃) | <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 | 70~95 | 70~95 | 70~95 | 70~95 | 70~95 | 70~95 | |
Main motor power (kw) | 55 | 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 |
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 | |
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