High performance building ceramics based on solid waste

The most important environmental problem of coal energy in Russia is the accumulation of solid waste in ash dumps - products of coal combustion. Ash dumps are located on the lands of populated areas and are source of toxic dust, contamination of surface and groundwater with soluble compounds and increased radioactivity. An effective solution to the problem of accumulation of ash and slag waste is its use as secondary raw materials in the construction industry. In this work, physicochemical methods were used to study ash and slag raw materials from coal-fired power plants in Novosibirsk and municipal cullet. Recipes for building ceramics have been developed by varying the content of fly ash and cullet, molding technologies, and modes of drying and firing of products. The influence of various methods of preparing raw materials (grinding, fractionation, ignition, mechanical activation) and methods of processing and dispersing ceramic masses on the physical and mechanical properties of experimental samples was studied. The possibility of obtaining ceramic products that meet the requirements of regulatory documents for construction materials is shown.