Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1978-04-28
1980-01-08
Mack, John H.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204109, 204269, C25C 700, C25C 120
Patent
active
041826710
ABSTRACT:
The present invention relates to an electrolytic gold and silver refining cell for extracting gold and silver contained in a material. The cell is part of a plurality of cells arranged in at least one common vessel provided with a solution feeding inlet, an exhausted solution outlet, and a stirrer. The cell is also provided with a plate cathode consisting of an acid-proof material and a plate anode consisting of the abovementioned material containing Au and Ag. The material is introduced into a filtering bag. The cathode and anode electrodes are suspended parallel to each other within the common vessel and are inserted in parallel in a d.c. supplied network. The invention is characterized by the fact that the vessel, housing a plurality of side by side cells, is provided with a hopper bottom with an outlet conduit controlled by a first normally open valve and connected to a larger conduit provided at its end with a second normally closed valve. Each of the filtering bags is provided with a bottom inclined towards its center. Each bag contains a pipe that extends along one of the vertical sides of the bag and along its inclined bottom to the center thereof. The pipe is connected outside the vessel with a manifold connected in turn with a pump assembly having a delivery pipe which is connected with the device for recovering the metal, in particular gold, which is formed on the anode.
REFERENCES:
patent: 668842 (1901-02-01), Rouse
patent: 1344681 (1920-06-01), Dalziel
patent: 2655473 (1953-10-01), Lowenheim
patent: 3431187 (1969-03-01), Lancy
patent: 3836443 (1974-09-01), MacGregor
Chimet S.p.A.
Mack John H.
Valentine D. R.
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