EP 1230406 A2 20020814 - SOLVENT EXTRACTION PROCESS FOR THE RECOVERY OF VALUABLE METALS FROM ACIDIC LEACHATES
Title (en)
SOLVENT EXTRACTION PROCESS FOR THE RECOVERY OF VALUABLE METALS FROM ACIDIC LEACHATES
Title (de)
FLÜSSIG/FLÜSSIG-EXTRAKTIONSVERFAHREN FÜR DIE GEWINNUNG VON WERTMETALLEN AUS SAUREN LAUGELÖSUNGEN
Title (fr)
PROCEDE PERMETTANT DE RECUPERER DES METAUX DE VALEUR
Publication
Application
Priority
- DE 19955881 A 19991120
- EP 0011184 W 20001111
Abstract (en)
[origin: DE19955881A1] Process for the recovery of valuable metals from an acidic aqueous leaching solution containing 10-40 g/l valuable metal ions comprises liquid/liquid extraction of the solution by contacting the solution once with an organic water insoluble extractant; contacting the extractant charged with valuable metal ions with an acidic aqueous phase, the metal ions being converted into the acidic aqueous phase; and subjecting the acidic aqueous phase to electrolysis or crystallization to recover the valuable metal. The pH of the aqueous leaching solution is adjusted to 1.2-2.5 before and/or during the liquid/liquid extraction. Preferred Features: The leaching solution contains copper ions.
IPC 1-7
IPC 8 full level
C22B 3/18 (2006.01); C22B 3/26 (2006.01); C22B 3/30 (2006.01); C22B 15/00 (2006.01)
CPC (source: EP US)
C22B 3/18 (2013.01 - EP); C22B 3/26 (2021.05 - EP US); C22B 3/30 (2021.05 - EP); C22B 15/0065 (2013.01 - EP); Y02P 10/20 (2015.11 - EP)
Citation (search report)
See references of WO 0138590A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
DE 19955881 A1 20010523; AU 2157601 A 20010604; CA 2391394 A1 20010531; EP 1230406 A2 20020814; MX PA02004899 A 20031014; PL 354899 A1 20040322; WO 0138590 A2 20010531; WO 0138590 A3 20011129
DOCDB simple family (application)
DE 19955881 A 19991120; AU 2157601 A 20001111; CA 2391394 A 20001111; EP 0011184 W 20001111; EP 00985012 A 20001111; MX PA02004899 A 20001111; PL 35489900 A 20001111