Method for the operation of electrolytic baths

Details Method for the operation of electrolytic baths Method for the operation of electrolytic baths

C - Chemistry, Metallurgy

25

C

C25C 7/06 (2006.01) C23G 1/36 (2006.01) C25B 1/00 (2006.01) C25B 15/00 (2006.01) C25C 1/00 (2006.01)

Patent

CA 2104274

ABSTRACT A method for the operation of electrolytic baths whereby a charged, dissociative metal cationic solute which dissolves in a solution such as treatment used for a metal surface acid-washing, is separated and migrated through the diaphragm of an ion- selective separatory membrane. The cathode chamber solution contains as the electrolyte maintaining the basic electrical conductivity, a salt containing ammonium and at least one of sodium or potassium ions as the cation, and a salt containing a chloric ion or both a chloric ion and a sulfuric ion, but no nitric ion, as the anions. Furthermore, as the regulator which maintains the alkalinity in response to the progress of the electrolysis process, the cathode chamber solution contains at least one of an ammonium salt, a carbonate or a carboxylate. By this, metal oxide particles or metal particles are separated and produced in the circulated cathode chamber solution. 51

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