(19)

(11)

EP 4 511 327 A1

(12)

(43) Date of publication: 26.02.2025 Bulletin 2025/09 (21) Application number: 23863598.1 (22) Date of filing: 04.08.2023

(51) International Patent Classification (IPC):  C01D 15/08(2006.01) (52) Cooperative Patent Classification (CPC): C01D 15/08; C01F 7/782; C01F 7/30; C22B 26/12; C01F 7/066 (86) International application number: PCT/TR2023/050779 (87) International publication number: WO 2024/054177 (14.03.2024 Gazette 2024/11)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 06.09.2022 TR 202213883 (71) Applicant: ETI ALUMINYUM ANONIM SIRKETI Seydisehir/Konya (TR)	(72) Inventor: BAYGÜL, Meral Seydi ehir/Konya (TR) (74) Representative: Valet Patent Services Limited  c/o Caya 83713X Am Börstig 5 96052 Bamberg 96052 Bamberg (DE)