Purifying mixed-cation electrolyte

Details Purifying mixed-cation electrolyte Purifying mixed-cation electrolyte

1986-03-26

1987-06-02

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204222, C25F 500

Patent

active

046701168

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.
By controlling the pH of the electrolyte, substantially one metal, or one desired combination of metals, may be removed. In particular, pure copper deposition can be completed at low pH even in the presence of cadmium; upon a substantial increase in pH, cadmium deposition will occur.

REFERENCES:
patent: Re28379 (1975-03-01), Backhurst et al.
patent: 556092 (1896-03-01), Frolich
patent: 3941669 (1976-03-01), Bharucha et al.
patent: 3956086 (1976-05-01), Wilkinson et al.
patent: 3969201 (1976-07-01), Oloman et al.
patent: 3974049 (1976-08-01), James et al.
patent: 3977951 (1976-08-01), Lopez-Caciedo
patent: 3988221 (1976-10-01), Garrett et al.
patent: 4032425 (1977-06-01), Kametani
patent: 4035278 (1977-07-01), Wilkinson et al.
patent: 4171249 (1979-10-01), Newton et al.
patent: 4202752 (1980-05-01), Sherwood et al.
patent: 4212722 (1980-07-01), Avedesian et al.
patent: 4240886 (1980-12-01), Hodges et al.
patent: 4272333 (1981-06-01), Scott et al.
"The Galvanic Series" p. 20, Hanson Van-Winkel Munning Co., 1957.

Affiliated with

Also associated with

Rating

Purifying mixed-cation electrolyte does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Purifying mixed-cation electrolyte, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Purifying mixed-cation electrolyte will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-611532