(19)
(11) EP 1 230 406 A2

(12)

(88) Date of publication A3:
29.11.2001

(43) Date of publication:
14.08.2002 Bulletin 2002/33

(21) Application number: 00985012.4

(22) Date of filing: 11.11.2000
(51) International Patent Classification (IPC)7: C22B 3/26, C22B 15/00, C22B 3/18, C22B 3/30, B01D 11/04
(86) International application number:
PCT/EP0011/184
(87) International publication number:
WO 0138/590 (31.05.2001 Gazette 2001/22)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

(30) Priority: 20.11.1999 DE 19955881

(71) Applicant: Cognis Deutschland GmbH & Co. KG
40589 Düsseldorf (DE)

(72) Inventors:
  • SCHWAB, Werner
    40789 Monheim (DE)
  • KEHL, Ralf
    40489 Düsseldorf (DE)
  • KÖPPL, Dietger
    40169 Mönchengladbach (DE)

   


(54) SOLVENT EXTRACTION PROCESS FOR THE RECOVERY OF VALUABLE METALS FROM ACIDIC LEACHATES