Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1975-01-17
1976-05-25
Andrews, R. L.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204140, 204146, C25C 112
Patent
active
039590968
ABSTRACT:
In the disclosed process, relatively pure copper is efficiently recovered from metallic alloy, scrap or cement, by electrochemical dissolution and deposition (as the relatively pure copper) under special conditions. In a halide solution, in a cell free from oxygen, the contaminated or alloyed copper is transferred from the impure state and separated by means of a substantially one electron process for the copper involved. The process can be operated in a one-fluid, or a two-fluid cell with diaphragm, depending on the composition of alloy or metal to be purified. For instance, in the case of copper-zinc alloys or mixtures, the copper is readily recovered in a one-fluid cell by suitable arrangement. Particularly with more complex alloys or mixtures, however, it can be advantageous to use a two-fluid cell and an intermediate purification stage between direct dissolution and electrodeposition. Concomitant metals may be recovered in either the metallic state or as chemical compounds. The process allows an orderly, effective electrochemical treatment for the recovery of copper in the presence of impurities.
REFERENCES:
patent: 507130 (1893-10-01), Hoepfner
patent: 556092 (1896-03-01), Frolich
patent: 714861 (1902-12-01), Browne
patent: 720235 (1903-02-01), Frasch
patent: 1757047 (1930-05-01), Hosenfeld
patent: 1817527 (1931-08-01), Schlotter
patent: 3673061 (1972-06-01), Kruesi
patent: 3692647 (1972-09-01), Chambers
patent: 3707448 (1972-12-01), Veloso
patent: 3776826 (1973-12-01), Atadan
Report of Investigation 7474, U.S. Dept of the Interior, Bureau of Mines.
LandOfFree
Electrochemical recovery of copper from alloy scrap does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electrochemical recovery of copper from alloy scrap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrochemical recovery of copper from alloy scrap will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-903317