FIELD: metallurgy.
SUBSTANCE: invention relates to aluminium production reduction cell cathode lining. Cathode lining comprises bottom and side units, interconnected by cold ramming paste, fire-resistant and heat-insulating layers from unshaped materials. Refractory layer is made from aluminosilicate material, a heat-insulating layer is from nongraphitic carbon or its mixture with aluminosilicate or alumina composition powder. Heat-insulation and refractory layers consist of, at least, two sublayers, wherein heat insulation and refractory layers porosity increases from top sublayer to bottom one, and ratio of thicknesses of refractory and heat-insulating layers is 1:(1-3).
EFFECT: enabling reduced cyanide content in heat insulation top layers and providing conditions for repeated use of heat-insulating material.
4 cl, 2 dwg
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