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(11)

EP 2 445 662 A1

(12)

(43) Date of publication: 02.05.2012 Bulletin 2012/18 (21) Application number: 10725692.7 (22) Date of filing: 17.06.2010

(51) International Patent Classification (IPC):  B22C 7/06(2006.01) B22C 9/10(2006.01) F24H 1/00(2006.01) B22C 9/12(2006.01) B22D 25/02(2006.01) F28D 15/00(2006.01) (86) International application number: PCT/EP2010/058509 (87) International publication number: WO 2010/149556 (29.12.2010 Gazette 2010/52)

(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 SE SI SK SM TR (30) Priority: 23.06.2009 EP 09163465 (71) Applicant: Bekaert Combustion Technology B.V. 9403 AR Assen (NL)	(72) Inventors: THIJSSEN, Paul NL-5935 AM Steyl (NL) VAN PETEGHEM, Jan B-2880 Bornem (BE) (74) Representative: Messely, Marc  N.V. Bekaert S.A. Industrial Property Department Bekaertstraat 2 8550 Zwevegem 8550 Zwevegem (BE)