C - Chemistry – Metallurgy – 25 – F
Patent
C - Chemistry, Metallurgy
25
F
204/80
C25F 5/00 (2006.01) C25C 1/00 (2006.01) C25C 1/12 (2006.01) C25D 21/18 (2006.01)
Patent
CA 1247553
ABSTRACT PURIFYING MIXED-CATION ELECTROLYTE 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 fluidise a bed of ? mm copper particles. The bed is fluidised by 25% to make it 42 cm deep. An anode is disposed above the top of the bed. A cathode 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.
460199
Goodridge Francis
Plimley Raymond E.
Wright Allen R.
Gowling Lafleur Henderson Llp
National Research Development Corporation
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