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:
Sep. 11, 2012
Filed:
Aug. 19, 2009
Hiroshi Sugitatsu, Kobe, JP;
Hidetoshi Tanaka, Kobe, JP;
Takao Harada, Kobe, JP;
Itsuo Miyahara, Kobe, JP;
Isao Kobayashi, Kobe, JP;
Hiroshi Sugitatsu, Kobe, JP;
Hidetoshi Tanaka, Kobe, JP;
Takao Harada, Kobe, JP;
Itsuo Miyahara, Kobe, JP;
Isao Kobayashi, Kobe, JP;
Kobe Steel, Ltd., Kobe-shi, JP;
Abstract
An object of the present invention is to provide a method for reducing a chromium-containing material at a high chromium reduction degree. In the method of the present invention, a mixture of a feedstock containing chromium oxide and a carbonaceous reductant is heated and reduced by radiation heating in a moving hearth furnace. The average rate of raising the temperature of the mixture in the reduction is preferably 13.96° C./s or higher in the period from the initiation of the radiation heating of the mixture until the mixture reaches 1,114° C.