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EP 4 337 802 A1

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(43) Date of publication: 20.03.2024 Bulletin 2024/12 (21) Application number: 22806133.9 (22) Date of filing: 13.05.2022

(51) International Patent Classification (IPC):  C22B 23/00(2006.01) C22B 3/38(2006.01) B01D 11/04(2006.01) C22B 7/04(2006.01) C22B 5/18(2006.01) (52) Cooperative Patent Classification (CPC): Y02E 60/10; B01D 11/04; C01G 53/10; C01G 51/10; C22B 23/0461; C22B 23/043; C22B 3/3846; C22B 3/3842; C22B 23/0484; C01F 5/40; C01P 2006/80; C01C 1/028; C01C 1/24; Y02P 10/20 (86) International application number: PCT/AU2022/050459 (87) International publication number: WO 2022/236381 (17.11.2022 Gazette 2022/46)

(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: 13.05.2021 AU 2021901424 (71) Applicant: Commonwealth Scientific and Industrial Research Organisation Acton, Australian Capital Territory 2601 (AU)	(72) Inventor: ZHANG, Wensheng Willetton, Western Australia 6155 (AU) (74) Representative: Gill Jennings & Every LLP  The Broadgate Tower 20 Primrose Street London EC2A 2ES London EC2A 2ES (GB)