METHOD OF MANUFACTURING HIGH PURITY ALKALINE METAL HYDROXIDE

PROBLEM TO BE SOLVED: To provide a method of obtaining a high purity alkaline metal hydroxide by which the heavy metal contamination of the alkaline metal hydroxide by an electrode is prevented and electrolysis is carried out with a lower voltage than that in the conventional electrolysis in the ele...

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Bibliographic Details
Main Authors INOKO MASANORI, YAMASHITA TATSURO
Format Patent
LanguageEnglish
Published 07.06.2007
Subjects
APPARATUS THEREFOR
CHEMISTRY
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS
METALLURGY
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Summary:PROBLEM TO BE SOLVED: To provide a method of obtaining a high purity alkaline metal hydroxide by which the heavy metal contamination of the alkaline metal hydroxide by an electrode is prevented and electrolysis is carried out with a lower voltage than that in the conventional electrolysis in the electrolytic refining of the alkaline metal hydroxide. SOLUTION: In the electrolytic refining of the alkaline metal hydroxide, a gold electrode is used for a cathode 32 and/or an anode 31. The gold electrode formed by applying gold on nickel is preferably used. A monopole type electrolytic bath, a multi-pole type electrolytic bath alone and the baths plurally connected in series can be used. COPYRIGHT: (C)2007,JPO&INPIT
Bibliography:Application Number: JP20050332466