Patent · US Expired

Process for the manufacture of brown coal briquettes

US3980447A · kind A · utility

14Cited by

8References

20Claims

0Family size

Assignee

Rheinische Braunkohlenwerke AG · DE

Inventors

Friedrich H. Franke · Cologne, DE
Werner Wenzel · Lübeck, DE
Mohamed Meraikib
Hans Berkenkamp

Key dates

Filing date	Nov 8, 1974
Grant date	Sep 14, 1976
Priority date	—
Expiry date	Nov 8, 1994

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10F5/00
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A process of manufacturing briquettes from brown coal includes drying brown coal, which is preferably in fine granular form. The dried brown coal is then heated at a first rate up to a temperature in a range of from about 300.degree. to about 320.degree. C. The brown coal is subsequently heated at a second rate, which is less than the first rate, to a temperature in the range of from about 350.degree. to about 400.degree. C. The brown coal is thereafter pressed into briquettes.

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