(19)

(11)

EP 4 515 164 A1

(12)

(43) Date of publication: 05.03.2025 Bulletin 2025/10 (21) Application number: 23718996.4 (22) Date of filing: 06.04.2023

(51) International Patent Classification (IPC):  F27B 1/26(2006.01) F27D 19/00(2006.01) C21C 5/46(2006.01) F27B 1/28(2006.01) F27D 21/00(2006.01) F27D 3/15(2006.01) (52) Cooperative Patent Classification (CPC): F27B 1/28; F27B 1/26; F27D 19/00; F27D 2021/0085; F27D 21/00; C21C 5/4673; F27D 3/1509 (86) International application number: PCT/EP2023/059184 (87) International publication number: WO 2023/208567 (02.11.2023 Gazette 2023/44)

(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 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: 26.04.2022 EP 22170026 (71) Applicant: Tata Steel IJmuiden B.V. 1951 JZ Velsen-Noord (NL)

(72) Inventors: COMMANDEUR, Colin 1970 CA IJmuiden (NL) LOUWERSE, Gerard, Marie 1970 CA IJMUIDEN (NL) VAN DER STEL, Jan 1970 CA IJMUIDEN (NL) STORM, Joost, Christiaan 1970 CA IJMUIDEN (NL) SPRIK, Rudolf 1970 CA IJMUIDEN (NL) STOLK, Christiaan, Cornelis 1970 CA IJMUIDEN (NL) (74) Representative: Group Intellectual Property Services  c/o Tata Steel Nederland Technology B.V. P.O. Box 10000 - 3G.37 1970 CA IJmuiden 1970 CA IJmuiden (NL)