News Date:2022-01-17 11:01:29
Judging the quality of the vertical roller mill, Xinxiang Great Wall Milling Machinery Factory believes that it can start from the size, hardness, moisture of the grinding material, as well as the stability and pressure resistance of the vertical roller mill:
Influence of grinding materials on vertical mill
From feeding to discharging, the whole processing process has a great influence on the mill. Mainly include the following effects:
1. The effect of material hardness on the mill
The hardness of the grinding material is usually distinguished by the Mohs hardness (1-10). The type and content of the inclusions in the raw ore are different, and the grinding difficulty is also different. Generally speaking, the higher the hardness of the material, the more difficult it is to grind, and the greater the wear of the vertical mill. , so the hardness of the material is directly related to the output of the mill and the service life of the parts.
The hardness of the grinding material can test the wear resistance of the mill to a certain extent.
2. The influence of the moisture content of the material on the mill
During the grinding process of the mill, there will be a lot of retained finished products and unqualified fine powder on the material bed. If the moisture content of the material is too large, the newly milled material will combine with the fine powder, resulting in the formation of a cake on the grinding disc. In the case of continuous feeding, the material layer of the grinding disc will continue to thicken, so that the grinding roller cannot effectively pulverize and grind the material. Due to the excessive load, the mill will vibrate or stop running. The moisture content of all materials can test the smoothness of the internal operation of the vertical mill to a certain extent.
Observe the operation of the vertical mill
Under normal circumstances, the stable operation of the vertical mill can achieve low dust and low noise. The stable operation also has an important impact on the inside of the mill, reducing mill wear and energy consumption. However, these factors, such as the grindability of materials, feed rate, system air volume, grinding pressure, classifier speed, etc., will have an impact on the operating stability of the mill.
Therefore, it is necessary to observe the operation stability of the mill to reduce unnecessary production consumption.
Observe the compressive capacity of the vertical mill
According to the actual production situation, when the mill runs for a long time, the production capacity of the mill will decrease to a certain extent, which is mainly due to the wear of the grinding rollers and grinding discs, resulting in changes in the grinding structure and grinding pressure in the grinding area of the mill. Therefore, during the on-site inspection, we should understand the service life of the wear-resistant parts of the lower mill. These parts have long service life, low energy consumption and relatively low engineering operation costs.
