Method for the electrolytic recovery of metals

Details Method for the electrolytic recovery of metals Method for the electrolytic recovery of metals

1974-12-19

1976-09-14

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

C25C 120

Patent

active

039805387

ABSTRACT:
Silver is recovered from used film plates by passing them into a solution into which their silver material is dissolved and by electroplating the dissolved silver out of the solution. Electrical circuits are provided to increase the magnitude of a continuous plating current in proportion to the rate of film and silver input and to decrease the current gradually to coincide with the decrease in silver concentration as plating continues.

REFERENCES:
patent: 1900893 (1933-03-01), Hickman
patent: 3067123 (1962-12-01), Huber
patent: 3202599 (1965-08-01), Schierholt
patent: 3418225 (1968-12-01), Wick et al.
patent: 3450622 (1969-06-01), Cothran
patent: 3463711 (1969-08-01), Geyken
patent: 3524805 (1970-08-01), Engelman
patent: 3551318 (1970-12-01), Snook et al.
patent: 3616435 (1971-10-01), Favell et al.

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