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:
Feb. 14, 1978
Filed:
Mar. 09, 1977
Applicant:
Inventor:
Ferhun H Soykan, New Hartford, NY (US);
Assignee:
Special Metals Corporation, New Hartford, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C22B / ; C21C / ;
U.S. Cl.
CPC ...
75 1 / ; 75 11 ; 75 12 ;
Abstract
Slag which is not electrically conductive when solid or at least at temperatures below 1500.degree. F. is melted by providing a graphite covering on top of the solid slag, contacting the covering material with at least two electrodes in spaced apart relationship, and supplying electric power to the electrodes to cause the graphite to sublime and set a plasma arc of carbon dioxide between the electrodes with resulting initial melting of the slag adjacent the electrodes. This melted slag then provides a conductive electrical path between the electrodes for continued melting of the slag.