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. 17, 1998
Filed:
Aug. 15, 1995
Applicant:
Inventors:
Erik Alfred Lassander, Viken, SE;
Sven-Einar Stenkvist, Brugg, CH;
Assignee:
Asea Brown Boveri AG, Baden, CH;
Primary Examiner:
Int. Cl.
CPC ...
I27D / ;
U.S. Cl.
CPC ...
373 76 ; 373 72 ; 373 74 ;
Abstract
In order to reduce the power loss of a direct current arc furnace the furnace vessel is only partially cooled in the region situated above the melting zone. A first cooling device is provided on a top edge of the vessel. A second cooling device is provided at the height of a slag line. The region of a vessel wall situated therebetween and facing the interior of the vessel above the slag line consists essentially of refractory material.