Abstract
Heat-insulating materials based on sodium chloride modified liquid glass and salt wastes from the production of aluminum have been obtained without using conventional native materials. The presence of isometric and oval pores in the studied samples imparts mechanical strength to them. The x-ray phase composition revealed that the samples contain mullite and anorthite, which impart strength to heat-insulating materials. The formation of mullite is promoted by the high content of alkali and iron, which lower the crystallization temperature of mullite to 1100°C.
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