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EP 4 532 435 A1

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(43) Date of publication: 09.04.2025 Bulletin 2025/15 (21) Application number: 23816467.7 (22) Date of filing: 02.06.2023

(51) International Patent Classification (IPC):  C04B 2/10(2006.01) C04B 7/46(2006.01) D21C 11/04(2006.01) F28D 7/16(2006.01) B01J 6/00(2006.01) D21C 11/00(2006.01) D21C 11/12(2006.01) (52) Cooperative Patent Classification (CPC): C04B 2/10; B01J 6/004; F28D 2021/0022; F28D 7/1607 (86) International application number: PCT/SE2023/050556 (87) International publication number: WO 2023/234847 (07.12.2023 Gazette 2023/49)

(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: 03.06.2022 SE 2250680 01.03.2023 SE 2350231 01.03.2023 SE 2350232 (71) Applicant: Limearc Process AB Njutånger, 825 93 (SE)	(72) Inventor: LUNDKVIST, Roland 825 93 NJUTÅNGER (SE) (74) Representative: Rouse AB  P.O.Box 7086 103 87 Stockholm 103 87 Stockholm (SE)