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:
Aug. 04, 1992
Filed:
Aug. 17, 1990
Applicant:
Inventors:
Tetsuharu Ibaraki, Sakai, JP;
Michitaka Kanemoto, Sakai, JP;
Masao Yamauchi, Sakai, JP;
Chikara Saito, Kitakyushu, JP;
Hiromitsu Moridera, Kitakyushu, JP;
Assignee:
Nippon Steel Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21B / ;
U.S. Cl.
CPC ...
75502 ; 75531 ; 75532 ;
Abstract
A method of in-bath smelting reduction comprises the step of selectively supplying powder materials into a gas upflow region or a gas downflow region within a furnace during the time that oxygen-containing gas is concurrently being blown into the furnace from a top lance. Also disclosed is an in-bath smelting reduction furnace for carrying out the method.