Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 6
Book Description
United States Patent : US2727818 : Method of Leaching Copper Sulfide Materials with Ammoniacal Leach Solution
Author: United States Patent : US2727819 : Method of Leaching Sulfide Copper Materials with Ammoniacal Solvent
Author: Oxidation Leaching of Copper Sulfides in Ammoniacal Pulps at Elevated Temperatures and Pressures
Author: Martin H. StanczykPublisher:
ISBN:
Category : Copper compounds
Languages : en
Pages : 22
Book Description
The Bureau of Mines investigated leaching of selected copper sulfide minerals and a composite of impure flotation concentrates at elevated temperatures and pressures with ammoniacal solutions. Copper extractions of 96 percent were obtained by leaching chalcopyrite at 75° C under oxidizing conditions for 60 minutes. An extraction of 99 percent of the copper contained in the composite concentrate was obtained by leaching the product for 90 minutes at 75° C. In tests of bornite, chalcocite, and covellite, 90 to 97 percent of the copper was extracted at 20° C provided an 8-hour reaction period was used. At 75° C essentially complete dissolution of the copper from these three minerals was accomplished in 60 minutes.
United States Patent : US6168766 : Process for Leaching Copper from Copper Sulfide Using Bacteria
Author: United States Patent : Process of Recovering Copper and of Optionally Recovering Silver and Gold by a Leaching of Oxide-and Sulfide-containing Materials with Water-soluble Cyanides
Author: Reactions of Copper Sulfide Minerals with Chlorine in an Aqueous System
Author: Rees D. GrovesPublisher:
ISBN:
Category : Chlorine compounds
Languages : en
Pages : 20
Book Description
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Author: 
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