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:
Nov. 01, 1983
Filed:
Jul. 20, 1982
Applicant:
Inventors:
Tsuneo Miyashita, Yokohama, JP;
Tsutomu Fukushima, Yokohama, JP;
Kiyoshi Kawasaki, Yokohama, JP;
Sadayuki Sasaki, Yokohama, JP;
Assignee:
Nippon Kokan Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
751305 ;
Abstract
Described is a method for the production of ferrochromium and a rotary furnace employed in such method. Raw chromium ores, fluxes and carbonaceous reducing agent(s) are charged into a rotary furnace into which oxygen or oxygen-enriched air is blown to effect smelting reduction. Hot exhaust gases from the rotary reducing furnace are used for pre-heating and pre-reducing of the materials for saving the energy considerably as contrasted to conventional methods.