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:
Oct. 23, 2018
Filed:
Jan. 06, 2015
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Jfe Steel Corporation, Tokyo, JP;
Kobe Steel, Ltd., Kobe-shi, Hyogo, JP;
Nisshin Steel Co., Ltd., Tokyo, JP;
Nippon Steel & Sumikin Engineering Co., Ltd., Tokyo, JP;
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
JFE STEEL CORPORATION, Tokyo, JP;
KOBE STEEL, LTD., Kobe-shi, JP;
NISSHIN STEEL CO., LTD., Tokyo, JP;
NIPPON STEEL & SUMIKIN ENGINEERING CO., LTD., Tokyo, JP;
Abstract
A method for operation of a blast furnace able to greatly reduce the COemission and enabling stable production of pig iron over a long period of time in a commercial blast furnace, that is, a method for operation of a blast furnace in which iron ore and coke are charged from a furnace top and is blown in pulverized coal from a usual tuyere, comprising blowing in a gas containing at least one of hydrogen and hydrocarbon from the usual tuyere together with the pulverized coal and blowing a gas comprised of a top gas of the blast furnace from which carbon dioxide and steam is removed from a shaft tuyere into the blast furnace.