Patent · US Expired

Method and apparatus for crushing material for grinding

US4889289A · kind A · utility

9Cited by

3References

14Claims

0Family size

Assignee

Krupp Polysius AG · DE

Inventors

Ludger Lohnherr · Oelde, DE
Walter Holz · Giengen an der Brenz, DE

Key dates

Filing date	May 6, 1988
Grant date	Dec 26, 1989
Priority date	—
Expiry date	May 6, 2008

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB02C23/12
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to a method and to apparatus for crushing brittle material for grinding using a roller mill and a material bed roll mill for crushing the material for grinding falling downwards over the edge of the grinding track before it is delivered to the sifter. By the use of a material bed roll mill a considerable increase in the throughput capacity of the apparatus and a significant saving of energy can be achieved.

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