Electrolysis: processes – compositions used therein – and methods – Electrolytic material treatment – Metal or metal alloy
Patent
1996-07-17
1999-01-05
Phasge, Arun S.
Electrolysis: processes, compositions used therein, and methods
Electrolytic material treatment
Metal or metal alloy
205717, 205741, C25F 500
Patent
active
058557652
ABSTRACT:
A process for removing zinc from galvanized steel. The galvanized steel is immersed in an electrolyte containing at least about 15% by weight of sodium or potassium hydroxide and having a temperature of at least about 75.degree. C. and the zinc is galvanically corroded from the surface of the galvanized steel. The material serving as the cathode is principally a material having a standard electrode potential which is intermediate of the standard electrode potentials of zinc and cadmium in the electrochemical series. The steel scrap is carried through the electrolyte by a conveyor which is electrically isolated from ground and which comprises a cathodic material which has a standard electrode potential which is intermediate of the standard electrode potentials of zinc and cadmium in the electrochemical series.
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Metal Recovery Industries, Inc.
Phasge Arun S,.
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