METHOD FOR COLLECTING VALUABLE METAL FROM NICKEL-HYDROGEN SECONDARY CELL

A method comprising the steps of preparing crushed material by crushing nickel-hydrogen secondary cells; separating alkalis, organic substances, and iron from the crushed substance in order to obtain a separated material from which at least alkalis, organic substances, and iron are separated; burnin...

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Main Authors OKADA, CHIKARA, SANTOKU METAL INDUSTRY CO., LTD, KITAZUME, NOBUYUKI, SANTOKU METAL IND. CO., LTD, KANEKO, AKIHITO, SANTOKU METAL INDUSTRY CO., LTD
Format Patent
LanguageEnglish
French
German
Published 26.04.1995
Edition6
Subjects
APPARATUS THEREFOR
BASIC ELECTRIC ELEMENTS
CHEMISTRY
ELECTRICITY
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
PRETREATMENT OF RAW MATERIALS
PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY ORREFINING OF METALS
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:A method comprising the steps of preparing crushed material by crushing nickel-hydrogen secondary cells; separating alkalis, organic substances, and iron from the crushed substance in order to obtain a separated material from which at least alkalis, organic substances, and iron are separated; burning the separated material to produce oxides of valuable metal to be collected; and processing the oxides by a molten salt electrolysis method by use of a molten salt bath for electrolysis. By this collection method, it is possible to efficiently collect electrode materials and others which are usable for nickel-hydrogen secondary cells. Further, compared to separation, refining, and smelting by ordinary chemical processings, this method realizes collection in a large quantity at a low cost.
Bibliography:Application Number: EP19940910600