METHOD FOR INHIBITING GENERATION OF NOx GAS IN DISSOLVING COPPER METAL

PROBLEM TO BE SOLVED: To provide a method for inhibiting generation of NOx gas which occurs in dissolving a copper metal in a nitric acid solution. SOLUTION: The method for inhibiting NOx gas generation is characterized by electrolyzing the nitric acid solution at a constant electropotential in a pr...

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Bibliographische Detailangaben
Hauptverfasser:	OTO HIDE, OKAZAKI TADASHI, MINATO KAZUYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS THEREFOR CHEMISTRY ELECTROLYTIC OR ELECTROPHORETIC PROCESSES METALLURGY PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROMOBJECTS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for inhibiting generation of NOx gas which occurs in dissolving a copper metal in a nitric acid solution. SOLUTION: The method for inhibiting NOx gas generation is characterized by electrolyzing the nitric acid solution at a constant electropotential in a process of dissolving the copper metal in the solution and by controlling a quantity of added hydrogen peroxide based on a measurement of the electrolysis current.