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. 04, 2005
Filed:
Oct. 10, 2001
Masahiro Kawakami, Fukuyama, JP;
Terutoshi Sawada, Yokohama, JP;
Takeshi Sekiguchi, Yokohama, JP;
Masayuki Watanabe, Yokohama, JP;
Katsuhiro Iwasaki, Yokohama, JP;
Shinichi Isozaki, Yokohama, JP;
Junichi Fukumi, Tokyo, JP;
Masahiro Kawakami, Fukuyama, JP;
Terutoshi Sawada, Yokohama, JP;
Takeshi Sekiguchi, Yokohama, JP;
Masayuki Watanabe, Yokohama, JP;
Katsuhiro Iwasaki, Yokohama, JP;
Shinichi Isozaki, Yokohama, JP;
Junichi Fukumi, Tokyo, JP;
NKK Corporation, Tokyo, JP;
Abstract
A smelting reduction method comprising (a) charging a carbonaceous material and an ore into a reacting furnace to directly contact the carbonaceous material and the ore; (b) reducing the ore until at least a part of the ore is metallized, the resultant reduced ore containing at least a part of metallized metal being produced; (c) charging the carbonaceous material and the ore containing at least a part of the metallized metal from step (b) into a smelting furnace having a metal bath; and (d) blowing a gas containing 20% or more of oxygen into the metal bath in the smelting furnace to produce molten iron.