Metals

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C - Chemistry, Metallurgy

25

C

204/66, 204/7

C25C 5/02 (2006.01) C02F 1/461 (2006.01) C02F 1/467 (2006.01) C25C 7/00 (2006.01)

Patent

CA 1075635

"IMPROVEMENTS IN OR RELATING TO METALS" ABSTRACT OF THE DISCLOSURE A metal powder e.g. copper or zinc, is produced from a dilute aqueous solution of the metal by subjecting the dilute aqueous solution to electrolysis in a cell having a rotating cylinder cathode in accordance with the equation:- I = KCVx where I is the current density, K is a constant for a given cell, C is the concentration of metal ion in aqueous solution, V is the peripheral velocity of the rotating cylinder cathode and x = 0.7 to 1Ø A diaphragm cell is preferably used. Dilute aqueous solutions treated include mining liquors and viscose rayon plant effluent. A plurality of cells in series may be used or the cathode compartment of the cell may be divided into sub-compartments.

246350

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