Electrowinning of copper in presence of high concentration of ir

Details Electrowinning of copper in presence of high concentration of ir Electrowinning of copper in presence of high concentration of ir

1977-11-09

1978-11-07

Andrews, Richard L.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204DIG9, C25C 112

Patent

active

041244605

ABSTRACT:
A process for electrowinning of copper from leach solutions containing a high concentration of iron in the range of about 5 to 40 gpl, is disclosed. The process consists in applying direct current through the solution and periodically reversing the polarity of such current to obtain a solution having a low ferric ion concentration, thereby increasing the operating current efficiency and consequently decreasing the power consumption.

REFERENCES:
patent: 2119936 (1938-06-01), White
patent: 3535218 (1970-10-01), Brown et al.
patent: 3824162 (1974-07-01), Sakai et al.
patent: 3864227 (1975-02-01), Brytczok et al.
patent: 3876516 (1975-04-01), Pace et al.
"Important Electrochem. Aspects of Electrowinning Cu from Acid Leach Soln's" by T. N. Andersen et al., AIME Intn'l. Symposium on Hydrometallurgy, Chicago, Ill., 2/25-3/1/73, pp. 171-202.

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