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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           
                   
    ZM            ADAMS AND ADAMS MOZAMBIQUE   
                MOZAMBIQUE       
                   
(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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