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:
Feb. 03, 2015
Filed:
Aug. 10, 2010
Applicants:
Takeshi Sato, Chiba, JP;
Taihei Nouchi, Kanagawa, JP;
Hidekazu Fujimoto, Kanagawa, JP;
Takashi Anyashiki, Kanagawa, JP;
Hideaki Sato, Kanagawa, JP;
Inventors:
Takeshi Sato, Chiba, JP;
Taihei Nouchi, Kanagawa, JP;
Hidekazu Fujimoto, Kanagawa, JP;
Takashi Anyashiki, Kanagawa, JP;
Hideaki Sato, Kanagawa, JP;
Assignee:
JFE Steel Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21B 15/00 (2006.01); C21B 5/00 (2006.01);
U.S. Cl.
CPC ...
C21B 5/008 (2013.01); C21B 5/007 (2013.01);
Abstract
A coke layer and an ore layer are formed in a blast furnace. The coke layer is formed of conventional coke and the ore layer is formed of carbon iron composite, conventional coke, and ore. The mixing percentage of the conventional coke in the ore layer with respect to the ore is 0.5 mass % or more. Slowing of the gasification reaction of carbon iron composite in the cohesive zone can be suppressed.