C - Chemistry – Metallurgy – 25 – D
Patent
C - Chemistry, Metallurgy
25
D
204/163, 204/184
C25D 3/00 (2006.01) C25C 1/00 (2006.01) C25C 1/12 (2006.01) C25C 7/00 (2006.01)
Patent
CA 1068641
ABSTRACT OF THE DISCLOSURE In an electrodeposition cell, high quality metal such as copper is produced on a non-retentive cathode blank at a high current density. A predetermined close cathode- anode spacing and a gas bubble tube for continuously agitating the electrolyte across the face of the cathode enable effective use of high current densities to electrowin or electrorefine a metal such as copper. The apparatus includes means for spacing anodes apart from cathodes at a predetermined close distance, optimally less than one inch face to face. Bubble tubes are inserted in cathode-anode pairs and are supported by bubble tube support members. An anode for electrowinning includes a non-conductive exten- tion on its base and non-conductive convection baffles at opposite edges of its faces. Baffles and an extension prevent unwanted electro-deposition on specific areas of the cathode. Baffles, close spacing, and bubble tubes cause the desired convection of electrolyte throughout the cell. In an electrorefining cell, convection baffles are positioned on vertical support members within the tank.
219196
Bangerskis Karlis I.
Harvey Walter W.
Randlett Myron R.
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