Apparatus for silver recovery

Details Apparatus for silver recovery Apparatus for silver recovery

1995-12-19

1997-11-11

Valentine, Donald R.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204275, 266101, 266170, C25C 700, C22B 300

Patent

active

056859627

ABSTRACT:
The apparatus allows at least two film processor fixing solution tanks for black and white films with silver-based coating to be connected to a silver recovery unit. To that end, an intermediate storage tank is connected between the fixing solution tanks and the silver recovery unit. The intermediate storage tank is divided by an impervious internal partition into two chambers of equal size. The pipes connect the overflows of the fixing solution tanks to the inlets of the first chamber. Another pipe connects the outlet to the silver recovery unit. The return pipes connect the outlets of the second chamber to the inlets of the fixing solution tanks. A pipe connects the silver recovery unit to the inlet of the second chamber.

REFERENCES:
patent: 3715291 (1973-02-01), Bentley
patent: 3901777 (1975-08-01), Bentley
patent: 4069127 (1978-01-01), Salemi et al.
patent: 4111766 (1978-09-01), Idota et al.
patent: 4139431 (1979-02-01), Scheidegger et al.
patent: 4299676 (1981-11-01), Skinner et al.
patent: 4346980 (1982-08-01), Palazzolo

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