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:
May. 16, 2017
Filed:
Jul. 11, 2012
Daiki Fujiwara, Fukuyama, JP;
Akinori Murao, Fukuyama, JP;
Shiro Watakabe, Fukuyama, JP;
JFE Steel Corporation, , JP;
Abstract
A method of operating a blast furnace includes two or more lances that inject reducing agents from a tuyere; injecting a solid reducing agent and a flammable reducing agent from different lances; and disposing the lances so that an axial line that extends from an end of the lance that injects the solid reducing agent and is the axial line of the lance that injects the solid reducing agent and an axial line that extends from an end of the lance that injects the flammable reducing agent and is the axial line of the lance that injects the flammable reducing agent cross each other, and so that a main flow of the solid reducing agent injected and a main flow of the flammable reducing agent injected overlap.