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(11)

EP 3 662 092 A1

(12)

(43) Date of publication: 10.06.2020 Bulletin 2020/24 (21) Application number: 18753328.6 (22) Date of filing: 30.07.2018

(51) International Patent Classification (IPC):  C22C 21/06(2006.01) C22F 1/047(2006.01) C22C 21/08(2006.01) C22F 1/05(2006.01) (86) International application number: PCT/EP2018/070532 (87) International publication number: WO 2019/025335 (07.02.2019 Gazette 2019/06)

(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: 02.08.2017 EP 17184490 (71) Applicant: Aleris Aluminum Duffel BVBA 2570 Duffel (BE)	(72) Inventors: MEYER, Philippe 56070 Koblenz (DE) VERBOOM, Els 2570 Duffel (BE) DAVIDKOV, Aleksandar Lozanov 52064 Aachen (DE) (74) Representative: Müller Schupfner & Partner Patent- und Rechtsanwaltspartnerschaft mbB  Bavariaring 11 80336 München 80336 München (DE)