(19)

(11)

EP 3 765 647 A1

(12)

(43) Date of publication: 20.01.2021 Bulletin 2021/03 (21) Application number: 19705361.4 (22) Date of filing: 19.02.2019

(51) International Patent Classification (IPC):  C22F 1/04(2006.01) C22C 21/06(2006.01) C22C 21/02(2006.01) C22F 1/05(2006.01) (86) International application number: PCT/EP2019/054047 (87) International publication number: WO 2019/174870 (19.09.2019 Gazette 2019/38)

(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 Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 15.03.2018 EP 18161929 (71) Applicant: Aleris Aluminum Duffel BVBA 2570 Duffel (BE)	(72) Inventor: LALPOOR, Mehdi 2570 Duffel (BE) (74) Representative: Müller Schupfner & Partner Patent- und Rechtsanwaltspartnerschaft mbB  Bavariaring 11 80336 München 80336 München (DE)