Silver removal apparatus and method

Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge

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Details

204237, 204275, 204229, 204272, 204273, C25C 120, C25B 1508

Patent

active

048029610

ABSTRACT:
A compact, self-contained, automatic electrolytic unit for recovery of silver. The apparatus includes a housing having a reservoir for unprocessed solution, an electrolytic cell disposed within the housing having a stationary cathode and anode in relative spaced relationship, a circulating pump for receiving solution being processed from the cell and returning the same to the cell with or without the addition of unprocessed solution. A metering pump may be employed to add additional unprocessed solution. It is preferred to deliver the solution within the cell at a plurality of locations so as to maintain the cell in a turbulent state. Sensors are provided for determining the level of unprocessed solution within the reservoir and overflow from the cell may be delivered exteriorly of the housing to a tailing unit for further processing. It is preferred that the reservoir, cell and pumps be maintained within a compact housing. The method of the invention involves delivering unprocessed solution from the reservoir to the cell in a manner to establish turbulence within the cell and recirculating solution removed from the cell to the cell so as to enhance efficiency of operation.

REFERENCES:
patent: 3003942 (1961-10-01), Cedrone
patent: 3431187 (1969-03-01), Lancy
patent: 3715291 (1973-02-01), Bentley
patent: 3901777 (1975-08-01), Bentley
patent: 3964990 (1976-06-01), Woyden
patent: 4276147 (1981-06-01), Epner
patent: 4305805 (1981-12-01), Edgerton et al.
patent: 4675085 (1987-06-01), Vasquez
patent: 4728408 (1988-03-01), Palazzolo

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