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(11)

EP 3 167 093 A2

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(88) Date of publication A3: 10.03.2016 (43) Date of publication: 17.05.2017 Bulletin 2017/20 (21) Application number: 15793892.9 (22) Date of filing: 06.07.2015

(51) International Patent Classification (IPC):  C22C 38/26(2006.01) C22C 38/22(2006.01) C22C 38/28(2006.01) (86) International application number: PCT/IB2015/001678 (87) International publication number: WO 2016/005818 (14.01.2016 Gazette 2016/02)

(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 (30) Priority: 08.07.2014 US 201414325940 (71) Applicant: Companhia Brasileira De Metalurgia E Mineração Cep 38.183-903 Araxá, Minas Gerais (BR)	(72) Inventor: SUBRAMANIAN, Sundaresa Venkata Hamilton, Ontario L8S 2T6 (CA) (74) Representative: Habermann, Hruschka & Schnabel  Patentanwälte Montgelasstraße 2 81679 München 81679 München (DE)