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. 28, 1984
Filed:
Nov. 23, 1982
Applicant:
Inventor:
Sven-Einar Stenkvist, Vaster.ang.s, SE;
Assignee:
ASEA Aktiebolag, Vaster.ang.s, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F27D / ;
U.S. Cl.
CPC ...
373 84 ; 373108 ;
Abstract
The present invention relates to a method and a device for operating a DC arc furnace with a bottom in the furnace vat consisting of rammed compound (8) or bricks with metallic elements (7) which are in electrically conductive contact, directly or via electrically conductive bricks (10) such as carbon bricks, with a hearth connection (11). The method is characterized in that, after melting and possibly further treatment of a charge (15), when tapping said melt such a quantity thereof is left that said remainder, the sump (17), may serve as part of a starting electrode for the next melting operation.