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(11)    Patent No :    AP 1948    (73) Applicant(s)       
(21)    Application No :    AP/P/2004/003036    BHP BILLITON INNOVATION PTY LIMITED, BHP Billiton       
            Centre, 180 Lonsdale Street, Melbourne VIC 3000,       
                   
(22)    Filing Date :    13.11.2002    Australia       
(24)    Date of Grant &    05.02.2009           
                   
(45)    Publication :

(30)    Priority Data            (72) Inventors   
    (33) Country    (31) Number    (32) Date    CASTILLO Danny Ignacio, Chile   
    AU    PR 8851    13.11.2001    SMITHSON Elliott Paul, Chile   
    AU    PR 9989    16.01.2002       
                (74) Representative   
(84)    Designated State           
    ZM            HONEY & BLANCKENBERG   
                   
(51)    International    Classification    C22B 3/02 (2006.01)    C22B 3/18 (2006.01)   

(54)    Title

An air distributor for a bioleaching system.

(57)    Abstract

An air distrubitor for use in heap or dump leaching systems is disclosed. The air distrubitor includes an air pipe having a series of holes for releasing air from the pipe and one or more protective members spaced outwardly of the air holes to shield the air holes.
(56)    Documents Cited :    US 4 231 770 A    US 4 280 826 A    EP 694 635 A

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