High Capacity Coal Mill Vertical Roller Fired Power Plant Coal Mill Environmental Protection

Coal Mill | Coal Vertical Roller Mill Coal Fired Power Generation High Capacity Environmental Protection
Product Introduction:
HVM vertical roller mill is an energy-saving grinding equipment that combines mature vertical grinding technology, successful foreign experience, and our company's technological innovation and upgrading. It integrates crushing, drying, grinding, grading, and conveying, and can be widely used in industries such as cement, electricity, metallurgy, chemical industry, non-metallic minerals, and focuses on the three major fields of non-metallic minerals, coal powder, and slag.
 
Performance characteristics:
1. High grinding efficiency and low operating costs.
2. Low construction and investment costs.
3. Simple and reliable operation, convenient operation and maintenance.
4. The equipment has strong drying ability and a wide range of grinding materials.
5. The product quality is stable and the particle size distribution is uniform.
6. The equipment is environmentally friendly, with low noise, less dust, and a clean operating environment.
Working principle:
The LM vertical grinding machine is mainly composed of a separator, grinding roller device, grinding disc device, pressurization device, reducer, electric motor, housing, and other parts.
During operation, the electric motor drives the grinding disc to rotate through the reducer, while hot air enters the vertical mill through the air inlet. The material falls better on the grinding disc from the discharge port. Due to centrifugal force, the material moves better from the grinding disc towards the edge of the grinding disc. When passing through the annular groove on the grinding disc, it is crushed by the grinding roller, and the crushed material continues to move towards the edge of the grinding disc until it is carried away by the airflow at the wind ring, And the large particles of material fall onto the grinding disc and continue to be crushed. When the material in the airflow passes through the upper separator, under the action of the guide vanes, the coarse material falls from the cone bucket onto the grinding disc, and the fine powder is discharged from the mill along with the airflow and collected by the system's dust collector. The collected powder is the product produced by the vertical mill. The material is dried during contact with the gas in the shell to achieve the required dryness and humidity of the product. By adjusting the angle of the guide vanes of the separator (not adjustable for small vertical mills) and the speed of the separator rotor, the required thickness of the product can be achieved.

Parameter Table of Coal Vertical Mill

 
Structural composition:
The vertical mill consists of a grinding disc, a grinding roller, a powder selector, a pressure device, a monitoring device, a transmission device, a water spray system, and a coarse powder external circulation system.
1. Grinding disc: including guide ring, wind ring, material blocking ring, lining plate, disc body, scraper plate, and lifting device.
2. Grinding roller: The roller sleeve is a wear-resistant component that requires sufficient toughness and good wear resistance.
3. Powder selection machines can be divided into three categories: static, dynamic, and combined powder selection machines
4. Pressure device: hydraulic device, energy storage device.
5. Monitoring device: Rocker arm monitoring, vibration monitoring.
6. Transmission device: electric motor, reducer.
7. Water spray system: reduce temperature and stabilize material layer.
8. Coarse powder external circulation system: elevator.

Engineering Cases
Engineering Design and Equipment Manufacturing Supply of HVM2800M Vertical Pulverized Coal Preparation System
Processing material type: bituminous coal
Capacity: ≥ 80t/h
Product fineness: 200 mesh, 85% pass