Grinding table for slag vertical mill

Abstract

The invention discloses a grinding table for a slag vertical mill. The grinding table for the slag vertical mill consists of a grinding table body, a lining plate and a material blocking ring, wherein a grinding table hole and a lining plate hole are respectively reserved at the outer ends of the grinding table body and the lining plate. By using the grinding table for the slag vertical mill, iron sand is removed timely from the position, where the iron sand is easiest to hoard, in a slag abrasive bed, so that the grindability of slag is improved; the yield is improved remarkably; moreover, the wear speed of the lining plate of a grinding roller and the lining plate of the grinding table are slowed; and cost input of each ton of finished products is reduced.

Description

technical field [0001] The invention relates to the technical field of vertical roller mills, in particular to a grinding disc of a slag vertical mill. Background technique [0002] The slag vertical mill feed material falls to the middle of the grinding table, forming a conical material pile. With the rotation of the grinding table, under the action of centrifugal force, it gradually spreads to the periphery of the grinding table and enters the rolling area between the grinding table and the grinding roller. The finished or semi-finished fine powder continues to move towards the edge of the grinding table, forming a slope with high outside and low inside. The finished or semi-finished fine powder enters the outlet of the injection ring along this slope. Downward becomes the return material, because the slag contains iron sand, and the proportion of iron is greater than that of the slag. Therefore, compared with slag or slag powder, iron sand or rolled iron sand powder i...

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Problems solved by technology

[0002] The slag vertical mill feed material falls to the middle of the grinding table, forming a conical material pile. With the rotation of the grinding table, under the action of centrifugal force, it gradually spreads to the periphery of the grinding table and enters the rolling area between the grinding table and the grinding roller. The finished or semi-finished fine powder continues to move towards the edge of the grinding table, forming a slope with high outside and low inside. The finished or semi-finished fine powder enters the outlet of the injection ring along this slope. Downward becomes the return material, because the slag contains iron sand, and the proportion of iron is greater than that of the slag. Therefore, compared with slag or slag powder, iron sand or rolled iron sand powder is easy to deposit on the slope formed by the edge of the grinding plate. The bottom layer, that is, the angle formed by the stop ring of the grinding disc and the lining plate of the grinding disc, is not easy to be thrown out of the edge of the grinding disc and enter the next process. Abrasion of the roller liner and retaining ring, on-site inspection shows that the wear of these places is the most serious

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