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:
Dec. 20, 1983
Filed:
Apr. 16, 1982
Applicant:
Inventors:
James E Hoffmann, South Plainfield, NJ (US);
Kohur N Subramanian, Houston, TX (US);
Assignee:
Exxon Research and Engineering Co., Florham Park, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B / ;
U.S. Cl.
CPC ...
75-9 ; 75 26 ; 75 74 ; 75 92 ;
Abstract
The present invention contemplates providing a finely divided copper calcine and thereafter subjecting the calcine to reduction flash smelting. Indeed, significant processing advantages are achieved by dead roasting a finely divided copper concentrate, especially in a fluid bed reduction zone, and thereafter subjecting the resulting calcine to reduction flash smelting. Gases from the dead roaster and the flash smelter are combined for SO.sub.2 recovery in an acid plant.