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:
May. 22, 1984
Filed:
Mar. 02, 1983
Applicant:
Inventors:
Tohru Matsuo, Hyogo, JP;
Takeo Aoki, Kawanishi, JP;
Assignee:
Sumitomo Kinzoku Kogyo Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
75 53 ; 75 58 ; 75257 ;
Abstract
A method of dephosphorization and desulfurization for molten iron alloy containing chromium, which adds to the bath of molten iron alloy flux comprising alkaline-earth metal oxide and alkaline-earth halide and further adds to the same the predetermined quantity of oxidizing agent, so that simple, highly efficient and economical dephosphorization and desulfurization are performable to produce high-chromium steel or stainless steel of high quality, iron oxide, chromium oxide or oxidizing gas are used as the oxidizing agent.