Title:
EXTRACTION OF COPPER FROM AQUEOUS AMMONIA LEACHING LIQUID
Document Type and Number:
Japanese Patent JPS55148733
Kind Code:
A
Abstract:
A method of extracting copper from an aqueous ammoniacal leach solution which is derived from the leaching of copper dross and which contains impurity cations, comprising contacting the leach solution with a copper-selective organic phase to take copper into the organic phase and then stripping the copper from the organic phase into an aqueous phase, the organic phase being washed with a dilute acid before stripping, wherein before the organic phase is washed with the dilute acid the concentration of copper in the organic phase is reduced below a level at which poor phase separation occurs under acid conditions.
Inventors:
UIRIAMU HOPUKIN
Application Number:
JP767980A
Publication Date:
November 19, 1980
Filing Date:
January 25, 1980
Export Citation:
Assignee:
ISC SMELTING
METALLURGICAL PROCESSES LTD
METALLURGICAL PROCESSES LTD
International Classes:
B01D11/04; C01G3/00; C22B3/30; C22B15/00; (IPC1-7): C22B15/00