APPLICATION OF ANTHRACITE FLOTATION ENRICHMENT WASTE IN PRODUCTION OF POROUS AGGREGATE BASED ON LIQUID-GLASS COMPOSITIONS

Abstract

Reduction of reserves of traditional natural raw materials for production of porous aggregates forces to look for new ways of its replacement by various types of technogenic raw materials. At the same time, the experience of advanced Western foreign countries has shown the practical, economic, environmental and technical feasibility of this direction and application as a tool for protecting the natural environment from pollution. In the present work it is shown that the most appropriate use wastes fuel and energy complex in the manufacture of insulating materials, such as porous aggregates with heat conductivity not more than 0.25 W/m•operating system. Waste from anthracite flotation enrichment was used as a thinning agent and burnout additive. Waste flotation enrichment of anthracites have an increased content of PP (loss during calcination = 42.4 %) and carbon content (C = 13.84 %), so they were used for the production of porous aggregate not only as a thinner, but also as burnout additives. Developed on the basis of waste flotation enrichment of anthracites and beet compositions for porous aggregates, which have high rates of compressive strength and softening factor, and the mark on the bulk density does not exceed M400. Studies have shown that the porosity on the exterior of the product, in contrast to the internal almost no form, ie waste flotation enrichment of anthracites contributes to the porous filler closed pores. The presence of pores of isometric shape and oval closed porosity in the porous filler gives it mechanical strength, and slit-like pores have a harmful effect. Innovative proposals for obtaining a porous aggregate have been developed. A patent of the Russian Federation was obtained for the obtained method of producing a porous filler based on a liquid-glass composition.