Stone Grinding Roller is an important equipment for vertical grinding, which requires sufficient toughness and good wear resistance.
The grinding disc includes guide ring, air ring, retaining ring, lining plate, disc body, scraper plate and lifting device, etc.
Stone Grinding Roller manufacturer AGICO MENENT introduces the working principle of vertical mill
The vertical mill motor drives the grinding disc to rotate through the reducer, and at the same time, the hot air enters the vertical mill from the air inlet.
The material falls from the feeding port to the center of the grinding table. Due to the centrifugal force, the material moves from the center of the grinding table to the edge of the grinding table. When passing through the annular groove on the grinding table, it is crushed by the grinding rollers.
The pulverized materials continue to move to the edge of the grinding table until they are taken away by the airflow at the air ring, and the large particle materials fall on the grinding table and continue to be pulverized.
When the material in the airflow passes through the upper separator, under the action of the guide vanes, the coarse material falls from the cone to the grinding disc, and the fine powder is milled together with the airflow and collected by the dust collector of the system.
The collected powder is the product produced by the vertical mill.
The material is dried in the process of contacting with the gas in the shell to achieve the dry humidity required by the product.
The required thickness of the product can be achieved by adjusting the angle of the guide vane of the separator (the small vertical mill cannot be adjusted) and the rotational speed of the rotor of the separator.
Analysis of Wear Factors of Vertical Mill Liner
The vertical mill liner is the key component of the vertical mill. The complete coordination of the vertical mill liner and the vertical mill roller can effectively complete the material grinding process. Therefore, the quality performance of the vertical mill liner has a direct impact on the vertical mill grinding capacity.
The vertical mill liner is a wearable part, and understanding its wear condition can help the company to better operate and maintain the vertical mill liner.
The vertical mill liner needs to withstand the impact and extrusion of the grinding roller and the material, so it is more prone to wear.
Common types of wear include pits, cracks and furrows on the surface. The reasons for the wear of the vertical mill liner are mostly related to the material and the parameters of the vertical mill.
Material characteristics are an important aspect of the wear of the vertical mill liner. The material characteristics here mainly refer to particle size, sharpness, grindability, moisture, etc., and particle size.
Therefore, before grinding materials, it is necessary to understand the applicable material characteristics of the vertical mill, and do not grind materials that exceed the grinding capacity of the vertical mill, which can extend the service life of the vertical mill liner to a certain extent.