Main selection and process of coal powder preparation
Vertical mill preparation process for coal powder (one-step preparation system)
This system combines drying and powder making simultaneously, enabling simultaneous grinding and drying. Adopting LM series vertical coal mills, the system is safe and stable, with low noise, energy conservation and environmental protection.
The HVM series vertical coal mills, abbreviated as vertical mills or vertical mills, are referred to as medium speed mills or vertical mills in the field of coal powder preparation. It is a new type of grinding equipment developed by Hefei Hengcheng, combining modern technology with years of experience in grinding machine manufacturing, in response to market demand. Its main technical and economic indicators meet international requirements, achieving the localization of international standard vertical mills.

Scope of application: Suitable for users with high requirements for coal powder production.
Preparation of coal powder processing range: 5-100T/H.

Working principle:
The electric motor drives the grinding disc to rotate through a reducer, and the material falls into the center of the grinding disc from the feeding port. At the same time, hot air enters the grinding chamber from the air inlet. Under the action of centrifugal force, materials move towards the edge of the grinding plate. When passing through the circular groove on the grinding plate, they are crushed by the grinding roller. The crushed materials are picked up by the Jet stream at the wind ring at the edge of the grinding plate. Large particles fall directly onto the grinding plate for grinding again. When the materials in the airflow pass through the dynamic and static separator, under the action of the rotating rotor, the coarse powder falls onto the grinding plate for grinding again. The qualified fine powder is grinded together with the airflow, Collect in the powder collection device, which is the product. Materials containing moisture are dried during contact with hot gases to achieve the required product moisture.


Parameter Table of Coal Vertical Mill

Engineering Case of HVM Vertical Mill
Project name: 600t/d lime Rotary kiln production line
Project supply content: HVM1300M vertical mill coal powder preparation system process, electrical automation design, and equipment manufacturing supply
Processing material type: high volatile and high moisture bituminous coal
Capacity: ≥ 11t/h
Product fineness: 200 mesh 97.4% passed