The feed size of the vertical mill is limited. If the feed size is too large, the vertical mill may have the following problems:

1. Vibration of the vertical slag mill

As a large-scale grinding equipment, this mill also has its own "personality". If the material to be ground is too large, it will cause the vertical mill to vibrate, causing serious wear on the lining of the grinding roller and grinding disc, and causing unevenness. Grooves, cracks and broken edges. Since some larger materials are not spheres, the clamp angle will change. Although some irregular bulk materials can be embedded by the grinding roller, due to their large particle size, the grinding roller will be slightly lifted up, and then the grinding roller will fall back under the action of the hydraulic system. In this case, the grinding roller The vibration will be very obvious.

2. Cause the vertical mill scraper to loosen and fall off

The Xinxiang Great Wall mechanical mill manufacturer reminds everyone that if the input material is too large, it will not only cause the mill to vibrate, but also cause the fine material thrown out of the grinding disc to be blown up by the air at the wind ring, and the large particles that cannot be blown fall into the accumulation. The material box is scraped out by the scraper plate installed on the grinding disc. Because the particles of the grinding material are large, it is not easy to be ground to the desired fineness, and more materials fall into the accumulation box. Therefore, the scraper resistance is large when starting with load, which makes the screws of the fixed scraper loose. In severe cases, the scraper falls off, resulting in a packing phenomenon, which causes the main machine of the vertical mill to increase in load and jump, failing to work normally and reducing output.

In addition, excessive vibration will greatly increase the dynamic load of the parts for the vertical mill system. This impact is very harmful to various parts, resulting in bad working conditions such as aggravation of the grinding roller and the liner of the grinding disc. Occurs frequently, and when it is severe, it will be shut down for maintenance, resulting in a decrease in output.

Therefore, in order to ensure the normal operation of the slag vertical mill, the operator must strictly control the size of the material to be ground, and must not be careless.