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EP 3 532 433 A1

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(43) Date of publication: 04.09.2019 Bulletin 2019/36 (21) Application number: 17703790.0 (22) Date of filing: 30.01.2017

(51) International Patent Classification (IPC):  C01G 25/00(2006.01) C01G 25/02(2006.01) C01G 35/00(2006.01) C01G 19/02(2006.01) C01G 25/06(2006.01) C01B 33/12(2006.01) B01J 23/14(2006.01) B01J 21/06(2006.01) C01G 33/00(2006.01) C01G 39/00(2006.01) C01G 23/04(2006.01) C01G 39/02(2006.01) B01J 21/08(2006.01) B01J 23/16(2006.01) (86) International application number: PCT/GB2017/050233 (87) International publication number: WO 2018/078313 (03.05.2018 Gazette 2018/18)

(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: 27.10.2016 WO PCT/GB2016/053335 27.10.2016 WO PCT/GB2016/053332 (71) Applicant: Magnesium Elektron Limited Manchester M27 8LN (GB)	(72) Inventors: STEPHENSON, Hazel Manchester Greater Manchester M27 8LS (GB) CHEPURNA, Iryna Manchester Greater Manchester M27 8LS (GB) HARRIS, Deborah Jayne Manchester Greater Manchester M27 8LS (GB) SCAPENS, David Manchester Greater Manchester M27 8LS (GB) (74) Representative: Murgitroyd & Company  Scotland House 165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)