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:
Aug. 13, 1996
Filed:
Jul. 31, 1995
Applicant:
Inventors:
Guy Randall, O Fallon, IL (US);
Gregory P Calvin, Collinsville, IL (US);
Assignee:
National Steel Corporation, Mishawaka, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21B / ;
U.S. Cl.
CPC ...
266 47 ; 266182 ; 266225 ;
Abstract
An improved fuel lance and blow pipe system for injecting supplemental fuel into a blast furnace includes a lance support on the blow pipe housing by use of a quick disconnect coupling for releasably coupling the lance to the blow pipe and accurately fix the lance to discharge supplemental fuel into the hot blast. The coupling can be manually operated to disconnect the lance, without use of tools, to permit the lance to be retracted for inspection or replacement, or to facilitate packing of the tuyeres directing the hot blast into the furnace.