Vertical mill is a grinding equipment that integrates drying, grinding, powder selection and conveying. It is favored by users because of its small footprint. However, many people reported that after the equipment has been used for a period of time, the output is not as good as before, which directly affects the economic benefits. The main reasons for the decline in vertical mill production are as follows:
1. When the grinding equipment is working, the feeding speed should be controlled well, not too fast or too slow. Too much material in the mill will affect the performance of the equipment, too little material will cause the mill to idle, and the output will naturally decrease;
2. The maintenance and replacement of the main fan impeller of the slag vertical mill is not timely, and the wear is serious, resulting in insufficient air volume of the system and a decrease in the air volume in the mill, which makes the fine powder on the grinding disc dense, the vibration value of the vertical mill increases, and the output decreases;
3. Excessive dampness of materials is the main reason for the reduction of stone powder output, which not only increases the difficulty of grinding, but also easily blocks the powder discharge channel of the finished product, making the mill work unsmoothly, causing a large amount of stone powder to block, resulting in a decrease in the output of finished products;
4. The function of the grinding stopper ring is to make the material fully ground on the grinding disc. If the retaining ring is worn or a section is lost, the thickness of the material layer will be reduced, the vibration of the mill will become larger, and the coarse powder will be thrown out of the grinding disc under the action of centrifugal force if the coarse powder is not fully ground, which increases the amount of returned material, and the total amount of grinding The amount of water has also increased, which can only reduce the output of the vertical mill, and the vibration is large, and it is easy to jump and stop, which affects the operation of the grinding mill.
In addition to the above factors, there are many factors that affect the output of the vertical mill, such as material segregation caused by the structure of the mixture, air volume control, hot air temperature control, batching control, etc., which will affect the output of the vertical mill. In actual production, it should be analyzed and solved according to the specific situation of the manufacturer. Although the reducer of the vertical mill has strong compact structure and good power density, it is inevitable to encounter failures in the process of operation. Vibration and eccentric loads. In this case, the wear of the lining plate should be checked regularly. When the grinding roller and the grinding disc lining plate are worn to a certain extent, they should be replaced in time to avoid other problems such as large vibration caused by the wear of the lining plate, which will affect the operation of the mill.