LM series vertical roller mill can be widely used in such industries as cement, power, metallurgy, chemical industry, non-metallic mineral. It is used to grind granular and powdered materials into powder with required fineness.
Technical Advantages:
1. Low run cost
2. Low invest cost
3. High drying ability
4. Stable quality
5. Easy to operate, reliable performance
6. Convenient to maintain
7. Environmental protection
Working principle Of Vertical Roller Mill
Vertical Roller Mill's motor runs under the condition that speed reducer drives the Nether millstone. The materials fall into the center of device through lock air feeder, and hot air comes into mill through air inlet. Under the function of centrifugal force, the materials move to the edge of the Nether millstone as it runs and rollers will grind the materials when they come by the annular chute. The grinded materials will be taken up by air circulation and the bigger powders will fall down for regrinding. Qualified powders will be collected by collecting device as to be final product. Materials containing water will be dried when they contact with the hot air. Different humidity materials can be dried to the requirement through adjusting the temperature of hot air. Adjusting the separator can get the required fineness powders.
Structure and function of vertical roller mill
Vertical roller mill's main structure consists of separator ,roller, mill table, pressurization device, deceleration machine, motor, shell body, etc. Separator is an important part of vertical roller mill which determines the size of the final powder.It is composed of gearing with adjustable speed , rotor, guiding vane, shell body , cone filler for coarse powder, blower.
It is a kind of powder collector with high-efficiency , low powder consumption and convenience.
Roller is the main part to grins the materials into powder. It is equipped in the curving arm of the mill. In virtue of the outside force, It pressed the materials on the table tightly. Driven by the mill table ,the roller runs, so the materials are grinded into pieces.
The vertical roller mill table is fixed at the output shaft of the deceleration machine. At the upside of the table is the hoper with an annular groove in which the materials are grinded.
The pressurization device brings the grinding pressure. It contains oil pressure station, pull rod of hydraulic pressure for grinding. Deceleration machine carries powder. The rotate speed of the mill table is the machine’s output speed.
According to the position of humidifier and dust collector. Our company can provide 2 allocation :three blower system and double blower system. This vertical roller mill (vertical grinder) collect the finished products by whirlmind dust catcher. This configuration can reduce the working negative pressure and the volume of gas which through the dust catcher. In vertical roller mill (vertical grinder) can use electrical dust catcher ,also bag dust catcher as terminal dust removal plant. By using the electrical dust catcher and bag dust catcher ,the gas can directly go from grinding into dust catcher. This construction can reduce the quantity of equipments and also simplify the allocation.
Vertical Roller Mill Technical Data:
LM Vertical Ore Mill Specification
| Model | LM130K | LM150K | LM170K | LM190K | LM220K | LM240K | |
| Turnplate diameter (mm) | 1300 | 1500 | 1700 | 1900 | 2200 | 2400 | |
| Capacity (t/h) | 10~30 | 13~40 | 18~57 | 23~72 | 36~114 | 41~128 | |
| Final product size | μm | 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 | |
| Final product water percentage | ≤1% | ≤1% | ≤1% | ≤1% | ≤1% | ≤1% | |
| Max. input size (mm) | <38 | <40 | <42 | <45 | <50 | <55 | |
| Best water percentage of raw material | <4% | <4% | <4% | <4% | <4% | <4% | |
| Drying needed if water percentage is more than | <15% | <15% | <15% | <15% | <15% | <15% | |
| Input wind temperature (℃) | <350 | <350 | <350 | <350 | <350 | <350 | |
| Output wind temperature (℃) | 70~95 | 70~95 | 70~95 | 70~95 | 70~95 | 70~95 | |
| Main motor power (KW) | 185~220 | 250~280 | 355~400 | 450~500 | 710~800 | 800~900 | |
| Overall dimension | L mm | 3500 | 4200 | 4700 | 8500 | 10200 | 11700 |
| W mm | 3400 | 3900 | 4500 | 5600 | 6700 | 7700 | |
| H mm | 5800 | 7100 | 8300 | 8800 | 10600 | 12200 | |
| Weight (t) | 48 | 75 | 90 | 100 | 125 | 160 | |
LM Vertical Coal Mill Specification
| Model | LM130M | LM150M | LM170M | LM190M | LM220M | LM240M | |
| Turnplate diameter (mm) | 1300 | 1500 | 1700 | 1900 | 2200 | 2400 | |
| Capacity (t/h) | 10~15 | 16~22 | 20~28 | 26~35 | 35~45 | 40~50 | |
| Coal powder fineness (R0.08) | <15% | <15% | <15% | <15% | <15% | <15% | |
| Coal powder water percentage | <1% | <1% | <1% | <1% | <1% | <1% | |
| Max. input size (mm) | <38 | <40 | <42 | <45 | <50 | <55 | |
| Input material water percentage | <15% | <15% | <15% | <15% | <15% | <15% | |
| Input wind temperature (℃) | <350 | <350 | <350 | <350 | <350 | <350 | |
| Output wind temperature (℃) | 75~95 | 75~95 | 75~95 | 75~95 | 75~95 | 75~95 | |
| Raw coal Hardgrove grindability index (HGI) | >55 | >55 | >55 | >55 | >55 | >55 | |
| Main motor power (KW) | 185 | 250 | 315 | 400 | 500 | 560 | |
| Overall dimension | L mm | 3500 | 4200 | 4700 | 8500 | 10200 | 11700 |
| W mm | 3400 | 3900 | 4500 | 5600 | 6700 | 7700 | |
| H mm | 5800 | 7100 | 8300 | 8800 | 10600 | 12200 | |
| Weight (t) | 46 | 75 | 94 | 100 | 122 | 157 | |
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