The Use of Reftinskaya State District Power Plant Fly Ash in the Production of Building Materials and Products


The system of dry ash–slag removal at the Reftinskaya state district power plant which provides capture, storage and shipment of fly ash to the consumers is considered in this study. The results of determination of chemical and phase composition, physical properties, melting temperature and activity of natural radionuclides of ash which is form during burning of stone coal of Ekibastuz basin are presented. Ash is acidic, superfine and refractory one with a low content of combustible substance. As to composition and properties it satisfies the requirements of Russian Standard no. 25818 and ships to consumers under Technical Conditions 5717–004–79935691–2009. The results of laboratory tests and industrial production of building materials and products on the basis of ash of Reftinskaya state district power plant are presented. It is shown that ash is used in the production of Portland cement, heavy and cellular autoclave concrete, dry mixes and can also be used as part of fly ash non-fired and agloporite gravel, ceramic bricks. The features of their production, basic physical and mechanical properties of building materials and products are described. It is shown that the introduction of a new system of dry ash removal at the state district power plant contributes to the expansion of directions and increase in the volume of ash recycling.

Keywords: Reftinskaya state district power plant, dry ash removal, fly ash, composition, properties, use, construction materials and products

[1] Document no. 34.09.603−88. (1988). Methodical Instructions on the Organization of Control of Composition and Properties of the Ash and Slags Released to Consumers by Thermal Power Plants. Moscow: VTI.

[2] Russian Standard no. 25818−2017. (2017). Thermal plant fly–ashes for concretes. Specifications. Moscow: Standartinform.

[3] Technical specifications 5717–004–79935691−2009. (2009). Fly ash of Reftinskaya state district power plant. Ekaterinburg: Reftinskaya SDPP, Branch of JSC “Enel OGK–5”.

[4] Russian Standard no. 31108−2016. (2016). Common cements. Specifications. Moscow: Standartinform.

[5] Delitsyn, L. M., et al. (2013). Innovative Directions of Full Use of Ashes for the Production of Alumina and Building Materials. Heat power engineering, issue 4, pp. 3–10.

[6] Zbigniew, G. (2013). Fly Ash in Cement Composition and Concrete. Gliwice: Publishing house of the Silesian Polytechnic University.

[7] Sear, L. K. A. (2001). Properties and Use of Coal Fly Ash. A Valuable Industrial By–Product. London: Thomas Telford Ltd.

[8] Vishnya, B. D., Ufimtsev, V. M. and Kapustin, F. L. (2006). Promising Technologies of Removal, Storage and Use of Ashes and Slags of Heat Power Stations. Yekaterinburg: USTU–UPI.

[9] Ananyev, V. M., Levchenko, V. N. and Vishnevsky A. A. (2006). The Use of Fly Ash as an Additive in the Production of Heavy Concrete. Building materials, issue 11, pp. 32–33.

[10] Volzhenskiy, A. V., Ivanov, I. A. and Vinogradov, B. N. (1984). Application of Ashes and Fuel Slags in the Manufacture of Building Materials. Moscow: Stroyizdat.

[11] Vishnevsky, A. A., Greenfeld, G. I. and Smirnova, A. S. (2017). Russian Market of Autoclaved Aerated Fly Ash Concrete. The End of 2016. Building materials, issue 3, pp. 49–51.

[12] Russian Standard no. 32496−2013. (2013). Fillers porous for light concrete. Specifications. Moscow: Standartinform.

[13] Kapustin, F. L. and Fomina, I. V. (2013). Production and Use of Non–Fired Fly Ash Gravel in Constructional Concretes. Advanced materials, issue 10, pp. 76–78.

[14] Vassil’kov, S. G., et al. (1987). Artificial Porous Aggregates and Lightweight Concretes Based on Them. Moscow: Stroyizdat.

[15] Russian Standard no. 530−2012. (2012). Ceramic brick and stone. General specifications. Moscow: Standartinform.