The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 16, 1986
Filed:
Dec. 20, 1984
Applicant:
Inventors:
Klaus Ulrich, Heiligenhaus, DE;
Wilhelm Janssen, Muelheim, DE;
Dieter Neuschuetz, Essen, DE;
Thomas Hoster, Essen, DE;
Hermann Doerr, Muelheim, DE;
Dietrich Radke, Ratingen, DE;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
75 1063 ; 420 11 ; 420 34 ;
Abstract
A process for the production of ferrochromium from iron-containing chromium ores, in which the reduction of the ore, which is mixed with coal and slag-forming constituents, is conducted in a rotary kiln at 1480.degree. to 1580.degree. C. in the presence of a CO-containing atmosphere from 20 to 240 minutes, and in which melting follows in a melting furnace at 1600.degree. to 1700.degree. C. By this process, the greatest part of the gangue of the ore can be separated off before melting the reduced ore.