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:
May. 22, 1979
Filed:
May. 31, 1978
Applicant:
Inventor:
Louis H Jaquay, Pittsburgh, PA (US);
Assignee:
Dravo Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22B / ;
U.S. Cl.
CPC ...
75 23 ; 75-6 ; 75-7 ; 75 73 ; 75 75 ; 75 76 ; 75 77 ; 75 82 ; 423 47 ; 423542 ; 423571 ;
Abstract
Non-ferrous metal sulfides are converted to recover metals therefrom in a high speed rotary converter, wherein an oxygen-containing gas is used for said conversion, with sulfur trioxide added to the converter along with the oxygen-containing gas to assist in control of temperatures of the charge during conversion, the sulfur trioxide being reduced to sulfur dioxide within the converter and exhausted therefrom.