Patent · US Expired

Process for crushing raw lignite

US5353997A · kind A · utility

7Cited by

3References

11Claims

0Family size

Assignee

LOESCHE GMBH · DE

Inventors

Klaus Kasseck · Korschenbroich, DE
Werner Karpus · Neuss, DE
Gerhard Salewski · Essen, DE

Key dates

Filing date	Jul 13, 1993
Grant date	Oct 11, 1994
Priority date	—
Expiry date	Jul 13, 2013

Classification

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

Abstract

The invention relates to a process for crushing raw lignite. The raw lignite is dried with an exit temperature after drying of approximately 70.degree. to 85.degree. C. The dried raw lignite is then crushed. This crushing of the dried raw lignite is performed in an air-swept roller mill, in which the crushing and cooling of the lignite particles is brought about by the inflowing cold and/or ambient air to a temperature range of below 60.degree. C.

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