Development of composition of low-melting additive for reduction of ceramic materials firing temperature

The results of substantiation and experimental researches aimed at reduction of temperature of burning of ceramic materials due to application of complex fusible additive are presented. Composition providing formation of low-melting eutectic is established. Components for formation of fusible melt are determined. It was found that in order to reduce the temperature of formation of a fusible melt based on clay raw materials, a complex additive containing FeO, Na20, SiO2 oxides and organics in the required ratio is needed. A composition of a complex low-melting additive containing: pyrite cinders, silicate blocks, silica gel and coal has been developed. The developed complex additive was tested to increase the strength of the ceramic tile while reducing the firing temperature.