(19)
(11) EP 1 368 513 A1

(12)

(43) Date of publication:
10.12.2003 Bulletin 2003/50

(21) Application number: 02711649.0

(22) Date of filing: 18.02.2002
(51) International Patent Classification (IPC)7C25C 5/00, C22B 9/14, C22B 34/12
(86) International application number:
PCT/AU0200/168
(87) International publication number:
WO 0206/6711 (29.08.2002 Gazette 2002/35)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 16.02.2001 AU PR317201

(71) Applicant: BHP Billiton Innovation Pty Ltd
Melbourne,Victoria 3000 (AU)

(72) Inventors:
  • STREZOV, Les
    Adamstown, New South Wales 2289 (AU)
  • RATCHEV, Ivan
    Georgetown, New South Wales 2298 (AU)
  • OSBORN, Steve
    Valentine, New South Wales 2280 (AU)
  • MUKUNTHAN, Kannappar
    Rankin Park, New South Wales 2287 (AU)

(74) Representative: Jenkins, Peter David et al
PAGE WHITE & FARRER54 Doughty Street
London WC1N 2LS
London WC1N 2LS (GB)

   


(54) EXTRACTION OF METALS