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(11)

EP 1 945 825 A1

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(43) Date of publication: 23.07.2008 Bulletin 2008/30 (21) Application number: 06818278.1 (22) Date of filing: 24.10.2006

(51) International Patent Classification (IPC):  C22C 21/16(2006.01) C22F 1/057(2006.01) (86) International application number: PCT/EP2006/010216 (87) International publication number: WO 2007/048565 (03.05.2007 Gazette 2007/18)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 25.10.2005 EP 05077448 (71) Applicant: Aleris Aluminum Koblenz GmbH 56070 Koblenz (DE)	(72) Inventors: MORRA, Paola, Valentina, Absala NL-1053 NA Amsterdam (NL) CAICEDO, Martinez, Carlos, Ernesto NL-1945 XD Beverwijk (NL) VAN DE LANGKRUIS, Jörgen NL-1058 AK Amsterdam (NL) BOEZEWINKEL, Johan NL-1943 NV Beverwijk (NL) (74) Representative: Müller, Frank Peter et al Müller Schupfner & Partner Patentanwälte Bavariaring 11 80336 München 80336 München (DE)