Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1977-12-14
1979-05-22
Andrews, R. L.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204108, 204105R, C25C 112
Patent
active
RE0300055
ABSTRACT:
An electrodeposition method in which 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.
Method includes maintaining anodes apart from cathodes at a predetermined close distance, optimally less than one inch face to face. Bubble tubes are positioned between cathode-anode pairs and are supported by bubble tube support members.
For electrowinning, anode is provided with a non-conductive extension on its base and non-conductive convection baffles at opposite edges of its faces. Baffles and extension prevent electrodeposition on unwanted areas of cathode. Baffles, close spacing, and bubble tubes cause desired convection of electrolyte throughout cell. In an electrorefining cell, convection baffles are positioned on vertical support members within the tank.
REFERENCES:
patent: 1700178 (1929-01-01), Porzell
patent: 1805920 (1931-05-01), Muschler
Bangerskis Karlis J.
Harvey Walter W.
Randlett Myron R.
Andrews R. L.
Kennecott Copper Corporation
Lorusso Anthony M.
Sniado John L.
Walpert Gary A.
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