Film processing apparatus for the electrolytic recovery of silve

Details Film processing apparatus for the electrolytic recovery of silve Film processing apparatus for the electrolytic recovery of silve

1976-04-29

1978-11-28

Mack, John H.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204109, C25D 2112, C25C 120

Patent

active

041274652

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: 3418225 (1968-12-01), Wick et al.
patent: 3463711 (1969-08-01), Geyken
patent: 3616435 (1971-10-01), Favell
patent: 3925184 (1975-12-01), Cave

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