FIELD: non-ferrous metallurgy, namely production of aluminum by electrolysis, possibly mounting of cathode device of cell for producing primary aluminum.
SUBSTANCE: lining of cathode part of aluminum cell includes hearth sections, refractory and heat insulation layers from powder material. Refractory layer includes at least three components, namely: alumo-silicate powder, carbon containing powder and anti-dust additive. Carbon-containing powder includes components of non-graphitized and unaffected to homogenous thermal graphitization kinds of carbon with strong cross links and with daily average value of saturation speed with sodium vapor no more than 3 x 103 % per hour.
EFFECT: possibility for preventing penetration of sodium vapor, other components of fluorine containing salts and melt aluminum into heat insulation layers of cathode device lining.
3 cl, 5 dwg, 1 tbl
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