Silver recovery device
AssigneeEastman Kodak Company
InventorGerhard Uffinger
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AssigneeEastman Kodak Company
InventorGerhard Uffinger
Estimating the term…
A cylindrical electrolysis tank (10) whose inner wall surface (11c) is held in contact with a single-use cathode (30) defining a hollow cylinder is provided with a removable tank lid (14) which forms an integral unit with a hollow cylinder (16) which carries the anode (34) on its peripheral surface (16a) and is provided with an uninterrupted closed bottom plate (17). The cylinder space (24) which is freely accessible from above serves to accommodate a replacement cathode (30) which is rolled up. At the circumferential abutment edge (18) between the peripheral surface (16a) of hollow cylinder (16) and the inner surface (19a) of lid plate (19) a ventilation groove (20) is provided which has a bore (20a) including an air-exhaust valve (21) and extending to the exterior.
Device for electrolytically recovering silver from a photographic processing fluid, said device comprising a cylindrical electrolysis tank with a removable lid including a ventilation means, a bottom and cylindrical walls having an inner surface surrounding the bottom, said bottom being provided with a fluid supply pipe and a fluid discharge pipe arranged therein, a hollow-cylindrical anode arranged concentrically within the tank, a single-use cathode in the form of a first hollow cylinder which rests against the inner surface of the walls, and electrical connections for the cathode and anode, characterized in that the tank lid forms an integral unit with a second hollow cylinder which extends downwards into the electrolysis tank, said second hollow cylinder having a peripheral surface, and wherein said anode being mounted on said peripheral surface.
Dependencies are inferred from the claim text.