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(11)

EP 2 237 909 A1

(12)

(43) Date of publication: 13.10.2010 Bulletin 2010/41 (21) Application number: 09704523.1 (22) Date of filing: 20.01.2009

(51) International Patent Classification (IPC):  B22D 35/04(2006.01) F27D 3/14(2006.01) C21B 7/14(2006.01) (86) International application number: PCT/IB2009/050189 (87) International publication number: WO 2009/093166 (30.07.2009 Gazette 2009/31)

(84) Designated Contracting States: 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 SE SI SK TR Designated Extension States: AL BA RS (30) Priority: 21.01.2008 ZA 200800596 (71) Applicant: Tenova Pyromet (Proprietary) Limited Parktown 2193 Johannesburg (ZA)	(72) Inventors: CARMAN, Edward Dean 2193 Johannesburg (ZA) JOUBERT, Hugo 2193 Johannesburg (ZA) BUTLER, Ryan Leonard 1739 Krugersdorp (ZA) (74) Representative: Johnson, Graham Pierssene  Appleyard Lees 15 Clare Road Halifax HX1 2HY Halifax HX1 2HY (GB)