Vertical mill, abbreviated as vertical mill, is a grinding equipment that integrates crushing, drying, grinding, grading, and conveying. Other grinding equipment, such as Raymond mill and ball mill, have disadvantages such as low single machine production capacity, high production cost, serious pollution, large floor area, and inconvenient maintenance. For medium to large scale grinding production lines, vertical grinding machines are a more suitable equipment.
Specifically, the advantages of vertical grinding machines compared to other grinding equipment include:
1. The production efficiency is improved, and the grinding force can be increased through hydraulic pressure boosting, thereby increasing production.
2. The production accuracy has been improved. According to the different particle size requirements of the finished product, the powder selection machine adopts cage type powder selection machine and conical rotor powder selection machine, which have high powder selection accuracy.
3. It has a small floor area and integrates crushing, drying, grinding, grading, and conveying, with a compact layout.
4. The production process is mature and focuses on the three major fields of non-metallic ore, coal powder, and slag. It can be suitable for grinding raw materials and clinker, and can also be used as pre grinding equipment to greatly increase production and save energy for subsequent mills.
5. Reduced operating costs
(1) Reduce energy consumption, the grinding roller directly crushes and crushes materials on the grinding plate, and uses a grinding roller sleeve to avoid direct contact between the grinding roller and the grinding plate, reducing wear. The grinding roller sleeve can be used on the opposite side, extending its service life by twice
(2) The hot air directly contacts the material in the mill, which has strong drying ability and saves one dryer
6. Reduction of noise and dust pollution

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 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