Efficient Energy-Saving Coal Powder Mill 12t/H Vertical Mill Hvm1300 Coal Vertical Grinding Mill
Vertical coal mill, also known as vertical coal mill or medium speed coal mill, is an efficient grinding equipment used for coal powder preparation.
Structural composition
Grinding disc device: fixed on the output shaft of the reducer, it is the place where the grinding roller crushes the material. The material is crushed and formed into a material bed on the grinding disc, mainly composed of a guide ring, an air ring, a blocking ring, a lining plate, a disc body, a scraper plate, and a lifting device.
Grinding roller device: It is a component used for crushing and crushing materials. The roller sleeve is a wear-resistant part that requires sufficient toughness and good wear resistance. During operation, it applies pressure to the material on the grinding disc under the action of a hydraulic device for grinding.
Powder selection machine: It can be divided into three categories: static, dynamic, and high-efficiency combination powder selection machine. It is a key component that affects the particle size of the product. By rotating the rotor, the material in the airflow is classified, and the coarse powder falls from the cone hopper to the grinding disc for re grinding. The qualified fine powder is discharged from the mill together with the airflow.
Pressure device: generally a hydraulic device that provides grinding pressure to the grinding roller through an energy storage device, providing sufficient pressure to crush the material, and can control the grinding force of the grinding roller on the material by adjusting the hydraulic pressure.
Reducer: used to reduce the speed of the electric motor and increase the torque, transmitting the power of the electric motor to the grinding disc, so that the grinding disc can rotate at an appropriate speed, driving the material on the grinding disc to move
Working principle:
The material enters from the feed port of the mill and falls onto the rotating grinding disc. The grinding disc rotates under the drive of the transmission device, generating centrifugal force that moves the material towards the edge of the grinding disc. During the movement, the material is gradually crushed and ground by the rolling and grinding action of the grinding roller. At the same time, the hot air introduced from the bottom of the mill blows up the ground coal powder, forming a gas-solid two-phase flow. In the rising process, the pulverized coal is graded through the separator, and the qualified pulverized coal is discharged from the mill with the airflow and enters the subsequent pulverized coal collection system; Unqualified coarse powder is returned to the grinding disc under the action of gravity for further grinding.
Specifications And Technical Parameters Of HVM 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
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Advantage
* High grinding efficiency with low power consumption
* Simple and reliable operation, stable product quality
* Simplified process flow, integrating grinding, drying, and powder selection functions
* Compact layout with small footprint, reducing civil construction costs
Application Area
Power industry: used in thermal power plants to grind coal into powder for efficient combustion in boilers, generating steam to drive steam turbines for power generation.
Cement industry: In the cement production process, vertical coal mills are used to grind coal and provide fuel for cement kilns to meet the heat required for cement clinker calcination.
Chemical industry: Some chemical production processes require the use of coal powder as raw material or fuel. Vertical coal mills can grind coal into suitable particle sizes to meet the requirements of chemical processes.
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Efficient Energy-Saving Coal Powder Mill 12t/H Vertical Mill Hvm1300 Coal Vertical Grinding Mill Images
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