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(11)

EP 2 691 356 A2

(12)

(88) Date of publication A3: 04.04.2013 (43) Date of publication: 05.02.2014 Bulletin 2014/06 (21) Application number: 12728937.9 (22) Date of filing: 30.04.2012

(51) International Patent Classification (IPC):  C06B 23/00(2006.01) C06B 47/14(2006.01) (86) International application number: PCT/ZA2012/000026 (87) International publication number: WO 2012/159127 (22.11.2012 Gazette 2012/47)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 17.05.2011 ZA 201103598 (71) Applicant: AEL Mining Services Limited 2196 Sandton (ZA)	(72) Inventors: PIENAAR, Andre 0081 Pretoria (ZA) YAKHOUB, Hamat 1619 Kempton Park (ZA) KENNEDY, Eric Callaghan, New South Wales 2308 (AU) DLUGOGORSKI, Bogdan Callaghan, New South Wales 2308 (AU) (74) Representative: TBK  Bavariaring 4-6 80336 München 80336 München (DE)