Purifying mixed-cation electrolyte

Details Purifying mixed-cation electrolyte Purifying mixed-cation electrolyte

1984-07-30

1985-12-10

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204106, 204108, 204222, C25F 500

Patent

active

045578125

ABSTRACT:
An electrolyte containing 65 g/l zinc and 150 g/l Cu is purified in zinc, that is, the copper is removed, by causing the electrolyte to fluidize a bed 8 of 1/2 mm copper particles. The bed is fluidized by 25% to make it 42 cm deep. An anode 11 is disposed above the top of the bed. A cathode 9 is disposed part-way up the bed. Copper is electroplated onto the bed particles. Any zinc which may be electroplated onto the bed particles tends to redissolve with concomitant cementation, on the particles, of copper, which can be recovered. The electrolyte is thus eventually completely stripped of copper and can be used for zinc electrowinning.

REFERENCES:
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patent: 4202752 (1980-05-01), Sherwood et al.
patent: 4212722 (1980-07-01), Avedesian et al.
patent: 4272333 (1981-06-01), Scott et al.
"The EMF Series", The Galvanic Series, Hanson Van Winkle-Nunning Co., 1949.

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