Coal mill, medium speed mill, vertical coal mill - Grinding Equipment

LM Vertical Coal Mill

Capacity: 2-100 t/h

Discharge Fineness: Р0.08=10-20%

Mineral Processing

Raw coal: Bituminous coal, anthracite, lignite
Petroleum coke: Calcined coke, delayed coke
Other fuels: Biomass, metallurgical coke

Applications

Power generation: Grinding systems for pulverized coal boilers
Metallurgy: Preparation of injected coal for blast furnaces
Building materials: Cement plants, fuel systems for lime kilns
Chemical industry: Preparation of raw materials for gasification

The LM Vertical Coal Mill is a high-performance grinding equipment specially designed by Liming Heavy Industry for the preparation of coal powder. Integrating the functions of crushing, grinding, drying, classification and conveying, this mill adopts a proven vertical structure featuring low energy consumption, high efficiency and stable operation. It is widely used in pulverized coal preparation systems for the power generation, metallurgy and building materials industries.

Advantage

1. High energy efficiency
Bed milling principle, saving 30%-50% energy compared to ball mills
High-performance dynamic classifier (efficiency >85%)
2. Exceptional drying capacity
Processes coal with up to 15% moisture content
Hot air temperature up to 350°C
3. Operational reliability
Adjustable hydraulic roller pressure system
Mineral oil lubrication for extended bearing life
4. Environmental performance
Full vacuum operation (emissions <30mg/m³)
Noise level below 85dB(A)
5. Intelligent control
PLC automation with remote monitoring
Real-time monitoring (vibrations, temperature, pressure)

Working Principle

Feeding: Raw coal is introduced into the center of the grinding table.
Grinding:
Migration toward the periphery under centrifugal force.
Compression by hydraulically driven rollers.
Drying:
Hot air injection (350°C max.) via the ventilation ring.
Classification:
Pneumatic conveyance to the dynamic selector.
Fine powder (<80μm) → Bag filter.
Coarse particles → Recycling to the grinding area.
Control:
Automatic regulation of critical parameters.

This integrated solution enables continuous production of pulverized coal that meets the requirements of the most stringent industrial processes.