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(11)    Patent No :    AP 2295    (73) Applicant(s)       
(21)    Application No :    AP/P/2007/003874    BHP BILLITON SA LIMITED, 200 Hans Strijdom Drive, 2194       
            Randburg,       
                   
(22)    Filing Date :    08.07.2005    South Africa       
(24)    Date of Grant &    26.09.2011           
                   
(45)    Publication :

(30)    Priority Data            (72) Inventors   
    (33) Country    (31) Number    (32) Date    BOWKER Clint, South Africa   
    ZA    2004/5281    20.07.2004    BATTY John, South Africa   
                   
                RORKE Gary, South Africa   
                et al   
                (74) Representative   
(84)    Designated State           
               
    BW  NA   ZM            HONEY & BLANCKENBERG   
               
(51)    International    Classification    C22B 3/18 (2006.01)   

(54)    Title

Tank bioleaching process

(57)    Abstract

A method of operating a tank bioleching process of a concentrate, which includes the step of supplying carbon in a non-gaseous form to microbial cells used in the process.

(56)    Documents Cited :    US 2004/038354 A    TZEFERIS PG ERZMETALL, GMBD-MEDIENVERLAG,

CLAUSTHAL-ZELLERFELD, DE, VOL.48, NO.10. 1 OCTOBER 1995, PP 726-738.    US 5 231 018
A

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