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:
Apr. 28, 1992
Filed:
Feb. 09, 1990
Applicant:
Inventors:
Karl Gut, Benken, CH;
Rolf Rietzscher, Mettmann, CH;
Hans-Ludwig Roes, Schaffhausen, CH;
Ivo Henych, Stetten, CH;
Assignee:
Georg Fischer AG, Schaffhausen, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B / ;
U.S. Cl.
CPC ...
75407 ; 75660 ; 75961 ; 423107 ; 423108 ;
Abstract
A process for the econimic recovery of metallic fractions generated during operation of a cupola furnace comprises the steps of the separating filter dust containing metal fractions from an off-gas stream and recirculating the metal fraction back to the cupola furnace for combustion with additional feedstock so as to enrich the metallic concentration of the filter dust to a level where economic recovery of the metallic fraction can occur.