Product Overview
The LM Series Vertical Roller Mill is an advanced grinding solution independently developed by our company, combining years of manufacturing experience with proven domestic and international technologies.
It integrates crushing, drying, grinding, classification, and conveying into one compact system, making it an ideal choice for modern grinding plants requiring high efficiency, low energy consumption, and stable product quality.
Technical Advantages
Low Comprehensive Investment
Integrated grinding system with simplified process flow
Compact layout, occupying only about 50% of the space of a ball mill system
Outdoor installation available, reducing civil construction costs
Optimized system design minimizes unnecessary equipment investment
Low Operating Cost
Energy consumption reduced by 30%–40% compared with ball mill systems
Strong drying capability with hot air directly contacting materials
Stable operation with low vibration and low failure rate
through hydraulic cylinders for fast roller and liner replacement
Environmental Performance
Fully sealed system operating under negative pressure
No dust leakage and clean working environment
Low noise due to stable operation and minimal vibration
Emission levels exceed national environmental standards
Automatic Control System
Intelligent expert control system
Supports both remote and local operation
Simple operation and reduced labor requirements
Improves production stability and operational efficiency
Applications
The LM Series Vertical Roller Mill is widely used in:
Cement industry
Power generation
Metallurgy
Chemical industry
Non-metallic mineral processing
“Over 100 types of minerals and industrial raw materials, such as:”
Barite, Bentonite, Calcite, Calcium Carbonate, Carbon Black, Ceramics, Clay, Cement Clinker, Coal, Dolomite, Graphite, Gypsum, Kaolin, Limestone, Marble, Petcoke, Phosphate, Talc, Quartz, Slag, and others.
Working Principle
The main motor drives the grinding plate through a dedicated reducer. Raw materials fall onto the center of the grinding plate and move outward under centrifugal force. Grinding rollers apply pressure to crush large particles and form a material bed for fine grinding.
Ground materials are carried by airflow to the classifier. Qualified fine powder is collected as finished product, while coarse particles return to the grinding plate for regrinding. Heavy impurities are discharged through the slag outlrotating by friction.
Technical Specifications
LM-M Vertical Coal Mill Series
| Model | LM12-2M | LM17-2M | LM19-2M | LM22-2M | LM24-2M | LM27-2M | LM31-2M | LM34-3M | LM37-3M |
| Grinding Feed Particle Size(mm) | <20 | <20 | <30 | <30 | <30 | <35 | <40 | <40 | <45 |
| Raw Coal Moisture | <15% | ||||||||
| Coal Powder Fineness | R0.08=10-20%(80-90% passing through 200 mesh) | ||||||||
| Coal Powder Moisture | ≤1-5% | ||||||||
| Capacity(t/h) | 4-6 | 7-10 | 10-17 | 15~22 | 20~30 | 25~40 | 35~50 | 45~60 | 65~100 |
| Main Motor Power(kW) | 55-75 | 90-132 | 185-200 | 220-280 | 280-355 | 355-450 | 500-630 | 560-710 | 900-1120 |
Note: The above processing capacity refers to the reference value under the conditions of grinding bituminous coal with a Hardgrove Grindability Index (HGI) ≥ 55 (capable of grinding coal materials of 80-400 mesh; for details, please consult the sales personnel).
LM-K Vertical Mine Mill Series
| Model | LM19-2K | LM22-2K | LM24-2K | LM27-2K | LM34-2K | LM37-3K | LM39-3K | LM44-3K | LM50-3K |
| Grinding Feed Particle Size(mm) | <30 | <30 | <35 | <35 | <35 | <40 | <45 | <50 | <55 |
| Optimal Moisture Content for Grinding Feed | <4% | ||||||||
| Moisture of Grinding Feed Requiring Drying | <15% | ||||||||
| Finished Product Fineness | 0.25-0.037mm（60-400 mesh） | ||||||||
| Finished Product Moisture | ≤1% | ||||||||
| Capacity(t/h) | 10-40 | 13-50 | 18-70 | 25-80 | 35-135 | 40-160 | 50-190 | 70-260 | 90-320 |
| Main Motor Power(kW) | 200-220 | 280-315 | 400-450 | 500-560 | 800-900 | 900-1120 | 1250-1400 | 1800-2000 | 2500-2800 |
LM-N Vertical Slag Mill Series (Slag Micropowder Preparation)
| Model | LM19-2N | LM22-2N | LM24-2N | LM27-2N | LM34-2N | LM35-3N | LM39-3N | LM44-4N | LM50-4N |
| Slag Moisture | <15% | ||||||||
| Slag Specific Surface Area | ≥400m²/kg | ||||||||
| Finished Product Moisture | <1% | ||||||||
| Capacity(t/h) | 7-15 | 9-17 | 11-19 | 13-25 | 22-40 | 35-55 | 50-78 | 70-95 | 90-130 |
| Main Motor Power(kW) | 200-250 | 280-355 | 400-450 | 500-630 | 800-1000 | 1250-1600 | 1800-2000 | 2500-2800 | 3150-3500 |
LM-N Vertical Refractory Grinding Series (Refractory Materials with High Alumina and High Silicon Content such as Slag)
| Model | LM19-2N | LM22-2N | LM24-2N | LM27-2N | LM34-2N | LM35-3N | LM39-3N | LM44-4N | LM50-4N |
| Grinding Feed Particle Size(mm) | <30 | <30 | <35 | <35 | <35 | <40 | <45 | <50 | <55 |
| Optimal Moisture Content for Grinding Feed | <4% | ||||||||
| Moisture of Grinding Feed Requiring Drying | <15% | ||||||||
| Finished Product Fineness | 0.25-0.037mm(60-400mesh) | ||||||||
| Finished Product Moisture | ≤1% | ||||||||
| Capacity(t/h) | 10-40 | 13-50 | 18-70 | 23-85 | 36-135 | 41-164 | 50-196 | 70-260 | 90-320 |
| Main Motor Power(kW) | 200-250 | 280-355 | 400-500 | 500-630 | 900-1000 | 1400-1600 | 1800-2500 | 2500-2800 | 3350-3800 |
LM-Y Vertical Pre-Grinding Series
| Model | LM19-2Y | LM22-2Y | LM24-2Y | LM27-2Y | LM34-2Y | LM39-3Y | LM44-4Y | LM50-4Y |
| Grinding Feed Particle Size(mm) | ≤30 | ≤30 | ≤35 | ≤35 | ≤40 | ≤50 | ≤55 | ≤55 |
| Grinding Feed Moisture(%) | ≤3% | |||||||
| Product Particle Size(≤0.08mm) | ≥25% | |||||||
| Product Particle Size(≤2mm) | ≥80% | |||||||
| Material Throughput(t/h) | 30-80 | 35-120 | 40-150 | 50-200 | 60-300 | 130-500 | 160-600 | 240-700 |
| Main Motor Power(kW) | 200-220 | 280-315 | 400-450 | 500-560 | 800-900 | 1800-2500 | 2500-2800 | 3350-3800 |
LM-X Vertical Fine Grinding Mill
| Model | LM17-3X | LM19-3X | LM22-3X | LM24-3X | LM27-3X | LM31-3X | LM34-3X |
| Grinding Feed Particle Size(mm) | <10 | <10 | <10 | <10 | <15 | <20 | <20 |
| Moisture Content of Grinding Feed(%) | <4% | ||||||
| Finished Product Fineness(10-40μm) | 90-97% | ||||||
| Capacity(t/h) | 3-9 | 4-13 | 6-17 | 7-24 | 8-28 | 9-35 | 12-40 |
| Main Motor Power(kW) | 160-200 | 220-280 | 280-355 | 400-500 | 500-630 | 630-710 | 710-800 |