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(11)

EP 4 816 573 A1

(12)

(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24895185.7 (22) Date of filing: 26.11.2024

(51) International Patent Classification (IPC):  C22B 26/12(2006.01) C01D 15/08(2006.01) C22B 3/06(2006.01) C22B 3/22(2006.01) C01D 15/02(2006.01) C22B 1/02(2006.01) C22B 3/12(2006.01) (52) Cooperative Patent Classification (CPC): Y02P 10/20; C01D 15/08; C01D 15/02; C22B 3/12; C22B 3/22; C22B 26/12; C22B 3/06; C22B 1/02 (86) International application number: PCT/AU2024/051260 (87) International publication number: WO 2025/111643 (05.06.2025 Gazette 2025/23)

(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: GE KH MA MD TN (30) Priority: 27.11.2023 AU 2023903818 (71) Applicant: Primero Group Limited Osborne Park, Western Australia 6017 (AU)	(72) Inventors: KREBS, Damien Osborne Park, WA 6017 (AU) TEAV, Kong Osborne Park, WA 6017 (AU) (74) Representative: Papula Oy  P.O. Box 981 00101 Helsinki 00101 Helsinki (FI)