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(11)    Patent No :    AP 2058    (73) Applicant(s)       
(21)    Application No :    AP/P/2006/003835    WMC RESOURCES LIMITED, Level 16, IBM Centre, 60 City       
            Road, Southbank, Melbourne, Victoria 3006,       
                   
(22)    Filing Date :    20.05.2005    Australia       
(24)    Date of Grant &    21.10.2009           
                   
(45)    Publication :

(30)    Priority Data            (72) Inventors   
    (33) Country    (31) Number    (32) Date    STRELTSOVA Natalia, Australia   
    AU    2004902740    21.05.2004    FURFARO Domenic, Australia   
                   
                (74) Representative   
(84)    Designated State           
                   
    BW  T Z   ZM   ZW        HONEY & BLANCKENBERG   
                   
(51)    International    Classification    C22B  1/00 (2006.01)    C22B 3/06 (2006.01)   
            C22B 23/00 (2006.01)       

(54)    Title

Recovery of nickel

(57)    Abstract

A process for recovering nickel from a solid feed material containing nickel in the form of millerite is disclosed. The process includes treating a slurry of the

solid feed material and a process solution so that all or at least part of the nickel in the millerite forms an acid leachable solid form. The process also includes pressure acid leaching the treated slurry and leaching nickel in solids in the slurry into solution. Finally, the process includes recovering nickel from

(56)    Documents Cited :    WO 02 024966 A   US 6 383 460 A   US 4 039 406 A

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