Patent · US Expired

Method for the operation of a stirring ball mill and a stirring ball mill for the practice of the method

US5312055A · kind A · utility

14Cited by

7References

5Claims

0Family size

Assignee

Omya GmbH · DE

Inventors

Ulrich Barthelmess · Niederstotzingen, DE
Ulrich Schindler · Grafing, DE

Key dates

Filing date	Aug 24, 1992
Grant date	May 17, 1994
Priority date	—
Expiry date	Aug 24, 2012

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB02C17/16
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to a method of operating a stirring ball mill which has a preferably cylindrical, rotating barrel provided with an inlet at one end and an outlet at the other end, in which a stirring shaft provided with stirring means rotates. This method includes operating the mill at supercritical rotatory speed with a degree of fill of at least 25%, while the balls are retained in the mill. In this manner a great throughput is achieved and a narrow grain size range, without requiring a great amount of space.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.