Vertical grinding machines have advantages such as high grinding efficiency, low power consumption, large feed particle size, easy adjustment of product fineness, simple equipment process flow, small floor area, low noise, small dust emission, easy use and maintenance, low operating costs, and low consumption of wear-resistant materials.
It can be widely used in power, metallurgy, cement, chemical industry, non-metallic ore and other industries, mainly for grinding raw cement, clinker, desulfurization limestone powder of power plant, slag powder, manganese ore, gypsum, coal, Baryte, Calcite, bauxite and other materials.
The vertical mill system consists of a host, feeder, classifier, blower, pipeline device, storage hopper, electric control system, collection system, etc. Design and manufacture a standardized modular pressure device. As the production capacity of the vertical mill increases, the number of grinding rollers of the vertical mill can be correspondingly increased. A motor driven reducer can be used to drive the grinding disc to rotate. The material moves around the grinding disc under centrifugal force and enters between the grinding rollers and the grinding disc. Under the pressure of the grinding rollers, the material is crushed due to compression, grinding, and shear forces, The ground powder is blown by the airflow of the blower to the classifier above the main machine for screening. Those particles that are too coarse still fall into the main machine for re grinding, while those that meet the specifications of fineness flow into the pulse dust collector with the wind. After collection, they are discharged through the powder outlet pipe to form the finished product. The purified airflow flows into the blower through the pipeline on the pulse collector and is discharged into the atmosphere.
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
| Specification | HVM1250 | HVM1300 | HVM1500 | HVM1700 | HVM1900 | HVM2200 | HVM2400 | HVM2800 |
| Grinding table median diameter(mm) | 1250 | 1300 | 1500 | 1700 | 1900 | 2200 | 2400 | 2800 |
| Capacity(t/h) | 10-15 | 10-15 | 14-22 | 20-28 | 26-35 | 35-45 | 45-56 | 70-90 |
| Coal Moisture(%) | ＜15 |
| Coal Power Fineness(%) | R0.08=2-12 |
| Coal Power Moisture(%) | ≤1 |
| Main Motor Power(kw) | 110/132 | 160/185 | 220/250 | 315/355 | 400/450 | 450/500 | 560/630 | 900/1120 |
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
Product Tags:
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5 - 70 T/H Industrial Vertical Coal Mill For Metallurgy Images
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