Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ib metal
Patent
1975-08-05
1977-09-13
Vertiz, O. R.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group ib metal
C01G 300
Patent
active
040482820
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.
REFERENCES:
patent: 3761249 (1973-09-01), Ritcey et al.
patent: 3853981 (1974-12-01), Hadzeriga
patent: 3867506 (1975-02-01), Skarbo
patent: 3907966 (1975-09-01), Skarbo
patent: 3971652 (1976-07-01), Bryson
Hearn Brian E.
I.S.C. Smelting Limited of London
Metallurgical Processes Limited
Vertiz O. R.
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