Method for the operation of electrolytic baths to produce Fe.sub

Details Method for the operation of electrolytic baths to produce Fe.sub Method for the operation of electrolytic baths to produce Fe.sub

1994-11-16

1996-03-05

Gorgos, Kathryn

Chemistry: electrical and wave energy

Processes and products

Electrophoresis or electro-osmosis processes and electrolyte...

C25B 700, C25B 100

Patent

active

054964547

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.

REFERENCES:
patent: 3394068 (1968-07-01), Calmon et al.
patent: 4008076 (1977-02-01), Junghanss et al.
patent: 4234393 (1980-11-01), Hepworth et al.
patent: 4948489 (1990-08-01), Greenberg

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