Patent · US Expired

Apparatus for crushing material containing particles that are hard to pulverize

US3951347A · kind A · utility

32Cited by

4References

14Claims

0Family size

Assignee

Polysius AG

Inventors

Peter Tiggesbaumker · Oelde, DE
Ludger Lohnherr · Oelde, DE

Key dates

Filing date	Sep 13, 1973
Grant date	Apr 20, 1976
Priority date	—
Expiry date	Sep 13, 1993

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB02C2015/002
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention concerns an apparatus for crushing, by means of a rotary mill, material containing particles that are difficult to pulverize. The mill has an air-sifter with pneumatic supply of ground material, where the coarse-material discharge of the air-sifter is connected to the intake side of the mill, and has a mechanical conveyor whose intake side is connected to the coarse-particle discharge of the mill and whose discharge is connected to the intake side of the mill.

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