Abstract
Results are provided for studies of the effect of high temperature on highly-refractory unmolded materials based on refractory oxides and silicides, and also the effect of mineral additives on their characteristics and physicomechanical properties. It is stablished that unmolded aluminosilicate materials based on electromelted or tabular material are able to operate without loss of their properties at a working temperature not lower than 1600°C. Introduction of carbon or basalt microfiber into the material makes it possible to reduce the weight and density of corundum refractories, but at the same time it increases linear shrinkage under high temperature action.
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