Dichromate leach of copper anode slimes

Details Dichromate leach of copper anode slimes Dichromate leach of copper anode slimes

1976-08-26

1978-02-28

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

75 99, 75109, 75117, 204106, C25C 112, C22B 700

Patent

active

040766055

ABSTRACT:
This invention relates to a process for the recovery of metal values from copper refinery anode slimes composed largely of copper, selenium, insolubles, and precious metals, including silver, comprising leaching the slimes with a solution containing from 20 to 200 g/l H.sub.2 SO.sub.4 and from 2 to 25 g/l hexavalent chromium at a temperature not exceeding about 80.degree. C., whereby copper dissolution is maximized and selenium and silver dissolution are minimized, separating the leach solution from the undissolved slimes residue, precipitating selenium from the separated leach solution by treatment with metallic copper, and electrowinning copper from the resulting purified solution.

REFERENCES:
patent: 2039256 (1936-04-01), Martin et al.
patent: 2084394 (1937-06-01), Heberlein
patent: 3271279 (1966-09-01), Poor
patent: 3730860 (1973-05-01), Horton et al.
patent: 3824160 (1974-07-01), Hartford
patent: 3914375 (1975-10-01), Clark et al.
patent: 3959097 (1976-05-01), Queneau et al.

Affiliated with

Also associated with

Rating

Dichromate leach of copper anode slimes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dichromate leach of copper anode slimes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dichromate leach of copper anode slimes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1674866