Formation of the phase composition of unsintered refractory concretes in the operating temperature range of glassmaking equipment

Comprehensive studies of the phase composition of refractory concrete compositions heat-treated in different temperature intervals, including the operating range of glassmaking equipment, have been performed. The characteristic changes of the phase composition of unsintered concretes during the transformative heat-treatment have been established; a new phase appears after sintering at 1000°C — calcium aluminosilicate 2CaO - Al 2 O 3 - SiO 2 , which attests to the interaction in the sample of calcium aluminates with free silica — microsilica or aluminosilicates.