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(11)    Patent No :    AP 2325    (73) Applicant(s)       
(21)    Application No :    AP/P/2007/003985    FREEPORT-MCMORAN CORPORATION, One North Central,       
            Phoenix, Arizona 85004,       
(22)    Filing Date :    18.12.2004    United States of America       
(24)    Date of Grant &    23.11.2011           
(45)    Publication :

(30)  Priority Data    (72) Inventors

    (33) Country    (31) Number    (32) Date    BREWER Robert E, United States Of America   
    US    60/623,453    29.10.2004    ROBERTSON Joanna M, United States Of America   
                MARSDEN John O, United States Of America   
                et al       
                (74) Representative   
(84)    Designated State           
(51)    International    Classification    C22B15/14 (2006.01)    C22B3/08 (2006.01)   

(54)    Title

Process for recovery of copper from copper-bearing material using pressure leaching, direct electrowinning and solvent/solution extraction

(57)    Abstract

The present invention relates generally to a process for recovering copper and/or other metal values from a metal-bearing ore, concentrate, or other metal-bearing material using pressure leaching and direct electrowinning. More particularly, the present invention relates to a substantially
acid-autogenous process for recovering copper from chal-copyrite-containing ore using pressure leaching and direct electrowinning in combination with a leaching, solvent/solution extraction and electrowinning operation.

(56)    Documents Cited :    WO 2002/08125 A    US 4 093 526 A    US 2003/019331 A1    US 5 628 817 A


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