Production of molded refractory products based on zeolite-containing rocks and high-modulus polysilicates

Abstract

The development of a new method for producing molded non-fired refractory materials is necessary to replace imported products with Russian-made products based on locally available raw materials, as well as increasing requirements to reduce energy costs and increase environment-friendly manufacturing. Samples of molded refractory products are obtained and tested on the basis of zeolite-containing rocks and high-modulus polysilicates. Zeolite-containing rocks are a common mineral, so the technology can be easily scaled, including in the European part of Russia, while traditional refractory raw materials are concentrated on the periphery of the Russian Federation. The strength and fire-resistant properties of these samples are due to the presence of phosphorus-silicate bonds. The type of binding is a chemical reaction based on the interaction of phosphates, alkaline silicates and other salts. Refractory molded products obtained by the non-burning method will be in high demand in the metallurgical, energy and chemical industries, and the use of available natural raw materials for their production is a guarantee of economic benefits for their manufacture and use. The technical characteristics of the obtained samples are determined: strength of refractory products, bulk mass, fire resistance, residual strength of samples after their heating to the application temperature, water absorption of samples, limits of permissible deviations of sizes, indicators of the appearance of products.