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(11)

EP 3 507 388 A1

(12)

(43) Date of publication: 10.07.2019 Bulletin 2019/28 (21) Application number: 17836105.1 (22) Date of filing: 04.08.2017

(51) International Patent Classification (IPC):  C22C 1/04(2006.01) C22C 1/10(2006.01) C22C 16/00(2006.01) C22C 28/00(2006.01) C22C 29/14(2006.01) C22C 32/00(2006.01) C22C 14/00(2006.01) C22C 27/00(2006.01) C22C 29/02(2006.01) C22C 29/16(2006.01) (86) International application number: PCT/AU2017/050822 (87) International publication number: WO 2018/023171 (08.02.2018 Gazette 2018/06)

(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: MA MD (30) Priority: 04.08.2016 AU 2016903066 05.05.2017 AU 2017901644 (71) Applicant: Weir Minerals Australia Ltd Artarmon, New South Wales 2064 (AU)	(72) Inventors: DOLMAN, Kevin Francis Epping New South Wales 2121 (AU) TANG, Xinhu Artarmon New South Wales 2064 (AU) (74) Representative: Pinnington, Giles Oliver  Marks & Clerk LLP 1 New York Street Manchester M1 4HD Manchester M1 4HD (GB)