Roller mill and method for comminuting brittle grinding stock

Abstract

A roller mill according to the invention for comminuting brittle grinding stock, comprises at least one grinding roller and a counter-surface, wherein the grinding roller comprises a shaft and a roller body that are connected to each other by means of a shrink fit. Furthermore, a heating unit for heating up the shaft in the region of the shrink fit is provided.

Description

technical field [0001] The invention relates to a roller mill and a method for grinding friable abrasives. Background technique [0002] The roller mills considered here comprise at least one grinding roller and a counter surface, wherein the counter surface can be formed, for example, by a grinding table (vertical mill) or a second grinding roller (roller compactor, bed roller mill). The at least one grinding roller includes a shaft and a roller body connected to each other by a shrink fit. [0003] In practice, the roll body sometimes slips off from its grinding roll and is damaged, and the heat fit parts on the grinding shaft and grinding roll may also be damaged at the same time. However, the shrink-fit parts mounted on the grinding shaft can usually be repaired, while the roll body is generally discarded, resulting in, in addition to financial loss, long roll mill downtime. Contents of the invention [0004] The problem underlying the present invention is therefore ...

AI Technical Summary

Problems solved by technology

However, the shrink-fit parts placed on the grinding shaft can usually be repaired, while the roll body is generally discarded, resulting in long roll mill downtime in addition to financial loss

Images