CATHODE DEVICE FOR AN ALUMINUM ELECTROLYTIC CELL

The invention relates to the design of a cathode device for an electrolytic cell for producing aluminum by electrolysis. The present cathode device comprises a metal shell lined with side blocks mounted onto a rim, carbon-graphite bottom blocks having conductive rods, a base made of a thermal insula...

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Bibliographic Details
Main Authors SBITNEV, Andrej Gennad'evich, ORLOV, Anton Sergeevich, PROSHKIN, Aleksandr Vladimirovich, PINGIN, Vitalij Valer'evich, ZHERDEV, Aleksej Sergeevich, POGODAEV, Aleksandr Mikhajlovich, NAGIBIN, Gennadij Efimovich
Format Patent
LanguageEnglish
French
German
Published 02.03.2022
Subjects
APPARATUS THEREFOR
CHEMISTRY
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES
METALLURGY
PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY ORREFINING OF METALS
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Summary:The invention relates to the design of a cathode device for an electrolytic cell for producing aluminum by electrolysis. The present cathode device comprises a metal shell lined with side blocks mounted onto a rim, carbon-graphite bottom blocks having conductive rods, a base made of a thermal insulation layer and a refractory layer that is made of a mixture of 23-26 wt% porcellanite, 43-46 wt% quartzites, and 28-32 wt% spent mullite bricks from anode baking furnaces, said refractory layer being compressed to an apparent density of no less than 2100 kg/m3. The invention increases the service life of an electrolytic cell, decreases fluoride salt consumption and broadens feedstock options by means of reusing waste products from aluminum factories and using natural materials, and slows the penetration of aggressive electrolysis components into the refractory layer.
Bibliography:Application Number: EP20190814192