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:
Jan. 03, 2023
Filed:
Dec. 15, 2017
Applicant:
Jfe Steel Corporation, Tokyo, JP;
Inventors:
Yusuke Fujii, Tokyo, JP;
Yoshie Nakai, Tokyo, JP;
Mikihiro Mori, Tokyo, JP;
Takahiko Maeda, Tokyo, JP;
Naoki Kikuchi, Tokyo, JP;
Noritaka Nishiguchi, Tokyo, JP;
Assignee:
JFE Steel Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21C 7/064 (2006.01); C21C 7/00 (2006.01);
U.S. Cl.
CPC ...
C21C 7/0645 (2013.01); C21C 7/0037 (2013.01); C21C 7/0075 (2013.01);
Abstract
When performing dephosphorization treatment of hot metal by adding a refining agent as a lime source and an oxygen source (dephosphorizing agent(s) and a gaseous oxygen source into the hot metal accommodated in a hot metal holding container, the refining agent used is a refining agent having an Ig-loss value of from 4.0% by mass to 35.0% by mass and including 60% by mass or more of quicklime.