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. 28, 1976
Filed:
Sep. 29, 1975
Applicant:
Inventors:
Mitsuo Furuya, Narashino, J;
Shigehiro Kimura, Kitakyushu, J;
Hiroyuki Kajioka, Kitakyushu, J;
Hiroyuki Katayama, Fukuoka, J;
Kiyomi Shio, Kitakyushu, J;
Arata Tanaka, Kitakyushu, J;
Assignee:
Nippon Steel Corporation, Tokyo, J;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
75 53 ; 75 55 ; 75 58 ;
Abstract
A quicklime is treated by CO.sub.2 gas so as to form a CaCO.sub.3 film on the surface of the particle thereof. It serves to prevent moisture absorption so that a steel making process, especially for the production of low hydrogen steel, can be done very effectively with low cost by the use of this CO.sub.2 -treated lime.