초록 ▼

An electrolytic silver recovery apparatus for the recovery of metallic silver from silver-laden solutions is disclosed. The apparatus has liquid level controls, interval electrical power controls, and a removable cathode. The apparatus is used particularly in conjunction with x-ray film developing s

An electrolytic silver recovery apparatus for the recovery of metallic silver from silver-laden solutions is disclosed. The apparatus has liquid level controls, interval electrical power controls, and a removable cathode. The apparatus is used particularly in conjunction with x-ray film developing systems to recover silver values from spent fixer solution in a manner whereby at least a substantial portion of the fixer solution may be returned to the film processor\s replenishing tank for reuse.

대표청구항 ▼

An electrolytic silver recovery unit for recovering silver from film fixer solutions comprising: container means for holding film processing system fixer solution from which silver is to be removed; at least one removable cathode assembly sized to fit within the container means; at least one anode a

An electrolytic silver recovery unit for recovering silver from film fixer solutions comprising: container means for holding film processing system fixer solution from which silver is to be removed; at least one removable cathode assembly sized to fit within the container means; at least one anode assembly sized and shaped to cooperate electrolytically with the cathode assembly; circulation means for circulating the fixer solution around the cathode and anode assemblies; switch means for both activating the circulation means and a timer unit when the switch means is in an on position and later deactivating the circulation means and a discharge valve when the switch means is in an off position, the switch means being activated to an on position by the fixer solution\s attainment of a predetermined greater amount in the container means and being deactivated to an off position by a decrease in the fixer solution\s volume to a predetermined lesser amount in the container means; a timer unit connected to and activated by the switch means, the timer unit also connected to an electrode switch which controls electrical energization of the cathode and anode assemblies, the timer unit preset to control flow of electrical energy to the anode and cathode assemblies for a predetermined time period, the timer also activating a discharge control valve; and discharge valve-controlled drain means for draining desilvered fixer solution from the container means, the discharge valve-controlled drain means being opened by the timer unit at the conclusion of the predetermined time period and being closed by the switch means being deactivated to an off position.