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:
Aug. 02, 1977
Filed:
May. 07, 1976
Robert W Stanley, Kirkland, CA;
Kohur Nagaraja Subramanian, Mississauga, CA;
Noranda Mines Limited, , CA;
Abstract
This invention provides a novel and an improved hydrometallurgical method for recovering copper values from copper concentrates. The method essentially comprises the following steps: A. forming an aqueous leach solution containing chloride or bromide ions in a predetermined concentration; B. dispersing copper concentrates in such leach solution to form a slurry; C. carrying out the leaching operation of the slurry at an elevated temperature and under an overpressure of oxygen so as to transform a major proportion of the copper values present in the concentrates into a solid basic copper sulphate; D. separating the resulting leach residue containing the basic copper sulphate from the leach solution; and E. recovering the copper values from the obtained leach residue. The process is simple and efficient and can be carried out either batchwise or continuously.