(19)

(11)

EP 4 330 451 A1

(12)

(43) Date of publication: 06.03.2024 Bulletin 2024/10 (21) Application number: 22726432.2 (22) Date of filing: 28.04.2022

(51) International Patent Classification (IPC):  D01B 3/04(2006.01) (52) Cooperative Patent Classification (CPC): D01B 3/04; D06M 19/00; D06M 2101/12; D06B 23/20; D06B 3/02 (86) International application number: PCT/EP2022/061428 (87) International publication number: WO 2022/229362 (03.11.2022 Gazette 2022/44)

(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: 29.04.2021 EP 21171369 (71) Applicant: Tessenderlo Group NV 1050 Brussel (BE)	(72) Inventor: FILLIÈRES, Romain 27200 VERNON (FR) (74) Representative: Hoyng Rokh Monegier B.V.  Rembrandt Tower, 30th Floor Amstelplein 1 1096 HA Amsterdam 1096 HA Amsterdam (NL)