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(11)    Patent No :    AP 2199    (73) Applicant(s)       
(21)    Application No :    AP/P/2007/003914    GEKKO SYSTEMS PTY LTD, 321 Learmonth Road, Ballarat,       
            Victoria 3350,       
                   
(22)    Filing Date :    18.08.2005    Australia       
(24)    Date of Grant &    21.01.2011           
                   
(54)    Publication :

(30)  Priority Data    (72) Inventors

    (33) Country    (31) Number    (32) Date    LEWIS -GRAY Alexander Hamilton, Australia   
    AU    2004904808    24.08.2004    (74) Representative   
(84)    Designated State           
                   
    GH   NA   T Z            HONEY & BLANCKENBERG   
                   
(51)    International    Classification    B03C 1/12 (2006.01)    B03C 1/247 (2006.01)   

(54)    Title

Magnetic separation method.

(57)    Abstract

A magnetic separator (1) for a mineral feed comprising, a rotatable drum (28) having an attraction surface, an inlet (5) for receiving a stream of the mineral feed and directing it past the rotating drum, means (33) for generating a magnetic field to attract magnetic components in the feed to the attraction surface, a first zone (15) for take off of non -magnetic components of the mineral feed, and a second zone (I6) for take off of the magnetic components, wherein the magnetic field generating means are adapted to subject the magnetic components to at least one reversal of polarity of the magnetic field as the drum rotates.

(56)    Documents Cited :    US 5057210 A    US 5860532 A    SU 1570778 A

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