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:
Dec. 13, 1977
Filed:
Nov. 11, 1976
Applicant:
Inventors:
Assignee:
British Steel Corporation, London, EN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
75 61 ; 75 9 / ;
Abstract
An iron or steelmaking process is described wherein iron or steelmaking materials are injected into one end of a generally horizontal rotary furnace rotatable at such a speed that the furnace contents are maintained around the interior by centrifugal force in an outer liquid metal layer and an inner slag layer spread on the liquid metal. The process comprises intermittently reducing the speed of rotation of the furnace to reduce the centrifugal force and permit liquid metal to be discharged from that end of the furnace remote from the input end in preference to the slag. Various means are described for accentuating the preferential discharge of liquid metal.