Agitator mill

US5133508A · kind A · utility

Assignee

• Draiswerke GmbH · DE

Inventors

• Norbert Stehr · Grünstadt, DE
• Philipp Schmitt · Lampertheim, DE

Key dates

• Filing date: Jan 30, 1991
• Grant date: Jul 28, 1992
• Expiry date: Jan 30, 2011

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B02C17/16
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An agitator mill has an in each case annular cylindrical exterior grinding chamber and an interior grinding chamber, which are delimitated from each other by a cup-shaped agitator element, the interior grinding chamber and the exterior grinding chamber being connected with each other by bypasses formed in the agitator element for the return of auxiliary grinding bodies. In order to improve the grinding result and to increase the lifetime of the auxiliary grinding bodies or to be able to use even smaller auxiliary grinding bodies without their reaching a separator device arranged ahead of a grinding stock exit, carriers are arranged in the area of the bypasses at the inner casing of the agitator element and extend over a substantial part of the radial width of the interior grinding chamber and into it.