Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1988-05-20
1989-05-30
Niebling, John F.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204109, 204112, 204114, 204228, 204250, 204275, 204290R, 75 74, 75 89, 75 92, C25C 100
Patent
active
048348490
ABSTRACT:
An apparatus for recovering a conductive metal from a liquid which contains that metal, and a method for recovering that metal using that apparatus. The apparatus includes a generally closed non-metallic container defining a cavity, for containing the liquid. A first electrode is supported and affixed within the cavity. A second electrode is composed of a thin film applied to the inside surface of the container, the film including as its main constituent the same metal as that to be recovered from the solution. Finally, a power supply is electrically connected, positive to the first electrode and negative to the second electrode, thus causing the metal from the solution to be deposited on the film electrode, lining the inside surface of the container with the metal to be recovered. The disclosed method includes continuously circulating metal-containing liquid into the container and removing demetalized solution from the container. Because the container is disclosed to be constructed of material, such as plastic, which will not contaminate the metal during smelting, the entire container can be placed in a smelting furnace on completion of the demetallizing operation eliminating a messy and wasteful metal removal step.
REFERENCES:
patent: 1572253 (1926-02-01), Tilson
patent: 3236753 (1966-02-01), Shantze et al.
patent: 3244612 (1966-04-01), Murphy
Niebling John F.
Ryser David G.
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