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. 07, 1989
Filed:
Jul. 06, 1987
Applicant:
Inventor:
Maurice G Fey, Plum Borough, PA (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21B / ; C22B / ;
U.S. Cl.
CPC ...
75 25 ;
Abstract
A method for processing metallurgical waste characterized by collecting metallurgical waste containing oxides of such metals as lead and zinc which when reduced form volatile and non-volatile metals; compacting a mixture of metallurgical waste, carbonaceous material and silica into pellets; heating the pellet at a temperature sufficient to reduce the oxides to vapors of elemental metals; and condensing the vapors to liquid or solid status of the elemental metal.