(19)
(11) EP 2 917 378 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
06.03.2019 Bulletin 2019/10

(45) Mention of the grant of the patent:
31.10.2018 Bulletin 2018/44

(21) Application number: 13799176.6

(22) Date of filing: 05.11.2013
(51) International Patent Classification (IPC): 
C22B 15/00(2006.01)
(86) International application number:
PCT/BR2013/000475
(87) International publication number:
WO 2014/071485 (15.05.2014 Gazette 2014/20)

(54)

PROCESS FOR REMOVING URANIUM FROM COPPER CONCENTRATE VIA MAGNETIC SEPARATION

VERFAHREN ZUR ENTFERNUNG VON URAN AUS KUPFERKONZENTRAT DURCH MAGNETISCHE TRENNUNG

PROCÉDÉ POUR L'ÉLIMINATION D'URANIUM DANS DU CONCENTRÉ DE CUIVRE PAR LE BIAIS D'UNE SÉPARATION MAGNÉTIQUE


(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

(30) Priority: 06.11.2012 US 201261723196 P

(43) Date of publication of application:
16.09.2015 Bulletin 2015/38

(73) Proprietor: Vale S.A.
22250-145 Rio de Janeiro, RJ (BR)

(72) Inventors:
  • MARQUES, Antonio Euclides Jaques
    CEP-31140-620 Belo Horizonte - MG (BR)
  • DA SILVA, Wesley Jose
    CEP-30493-175 Belo Horizonte - MG (BR)
  • BERGERMAN, Maurício Guimarães
    CEP-37701-706 Poços de Caldas - MG (BR)
  • RODRIGUES, Wendel Johnson
    SP Brasil CEP 04795-900 (BR)
  • GONÇALVES, Keila Lane de Carvalho
    CEP-31330-642 Belo Horizonte - MG (BR)

(74) Representative: EP&C 
P.O. Box 3241
2280 GE Rijswijk
2280 GE Rijswijk (NL)


(56) References cited: : 
AU-B2- 608 333
US-A1- 2008 173 132
   
  • N.P.H. PADMANABHAN, T. SCREENIVAS: "Process parametiric study for the recovery of very-fine size uranium values on super-conducting high gradient magnetic separator", ADVANCED POWDER TECHNOLOGY, vol. 22, 2011, pages 131-137, XP002723772,
  • DEGALEESAN S N ET AL: "Recovery of uranite from rakha copper mines", TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS,, vol. 21, no. 1, 1 March 1968 (1968-03-01), pages 42-44, XP009176129, ISSN: 0972-2815
  • J.N.M. AGRICOLA, J.L. TOP AND A.F. FORT: MAGNETIC SEPARATION NEWS, vol. 2, 1989, pages 191-195, XP002723773,
  • KNOERR AW: "Palabora's amazing expansion program", ENGINEERING AND MINING JOURNAL - E/MJ, MINING MEDIA, ENGLEWOOD, CO, US, vol. 172, no. 5, 1 May 1971 (1971-05-01), pages 65-87, XP009176089, ISSN: 0095-8948
   
Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).