Preparation of Ceramic Press Powder Based on Aluminosilicate Clay Raw Materials and Ash and Slag Waste from Thermal Power Plants Synthesized by Vitreous Microspheres

The possibility of using 3-component charges in the production of wall ceramics by semi-dry pressing from aluminosilicate loams in a composition with ash and slag waste from CHP plants, cullet and silica gel obtained by the sol-gel method is considered. The physicochemical processes and phase formations occurring in the production of ceramic materials using WCO at the firing stage have been studied. It was found that the introduction of fluxes in the form of cullet and silica gel reduces the temperature of heat treatment and are intensifiers of mineral neoplasms that increase mechanical strength compared with samples made from 2-component compositions «loam + ASW».

V.A. GUR’EVA¹, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
A.V. DOROSHIN², Graduate Student

¹ Orenburg State University (13, Pobedy Avenue, 460018, Orenburg, Russian Federation)
² Buzuluk Humanitarian and Technological Institute (branch) of OSU (112, Komsomolskaya Street, 461040, Buzuluk, Russian Federation)

1. Egorova A.D., Kolesov M.V., Mikhailov D.A. Construction ceramics from raw materials from Yakutia, modified with cullet. Fundamentals of construction materials science: Collection of reports of the International Online Congress. October 06–11, 2017. Belgorod: BSTU named after V.G. Shukhov, pp. 975–980. EDN: YLPFUD (In Russian).
2. Gur’eva V.A., Doroshin A.V., Dubinetskiy V.V. Research in influence of modifying additives on frost resistance and properties of ceramics. Stroitel’nye Materialy [Construction Materials]. 2018. No. 8, pp. 52–56. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2018-762-8-52-56
3. Zhernovaya N.F., Doroganov E.A., Zhernovoy F.E., Stepina I.N. Study of materials obtained by sintering in the “clay – cullet” system. Vestnik of the Belgorod State Technological University named after V.G. Shukhov. 2013. No. 1, pp. 20–23. EDN: PUOLAT (In Russian).
4. Eromasov R.G., Nikiforova E.M., Stupko T.V. et al. Efficiency of using quartz-containing man-made products for the production of ceramic building materials. Fundamental’nyye issledovaniya. 2013. No. 4–1, pp. 24–29. EDN: PUUHJN (In Russian).
5. Lazareva Ya.V., Kotlyar A.V., Yashchenko R.A., Orlova M.E. The influence of cullet on the sintering ability of argillite-like clays. Resursoenergoeffektivnyye tekhnologii v stroitel’nom komplekse regiona. 2018. No. 9, pp. 114–118. EDN: XRHTPV. (In Russian).
6. Patent for invention RU 2240294 C2. Sposob izgotovleniya stenovykh keramicheskikh izdeliy [Method for manufacturing wall ceramic products] Gabidullin M.G., Rakhimov R.Z., Garipov R.R., Mavlyuberdinov A.R., Faezov R.U., Zaripov T.I., Valiullin R.G., Gorbach R.M., Arslanov Sh.Yu. Application No. 2003104540/03. Dated 14/02/2003. (In Russian).
7. Balkevich V.L., Belyakov A.V., Safronova T.A. Synthesis of disaggregated fine mullite powder by chemical methods. Steklo i keramika. 1985. No. 5, pp. 25–27. (In Russian).
8. Kumar Saha S., Pramamik P. Aqueous sol-gel synthesis of mullite powder by using aluminium oxalate and tetraethoxysilane. Journal of Materials Science. 1994. Vol. 29 (13), pp. 3425–3429. DOI: 10.1007/BF00352044
9. Phulé P.P., Wood T.E. Ceramics and glasses, sol-gel synthesis of. Encyclopedia of Materials: Science and Technology (Second Edition). 2001, pp. 1090–1095. https://doi.org/10.1016/B0-08-043152-6/00201-1
10. Mararakin M.D., Vartanyan M.A., Makarov N.A., Sazhin I.V. Synthesis of sol-gel by the method of additives of eutectic composition for ceramics based on silicon carbide. Steklo i keramika. 2017. No. 9, pp. 25–27. (In Russian).
11. Guryeva V.A., Doroshin A.V. Sol-gel technology in the production of wall ceramics using technogenic raw materials using the example of ash and slag waste from thermal power plants. In the collection: Traditions and innovations in construction and architecture. Construction and construction technologies. Collection of articles of the 78th All-Russian Scientific and Technical Conference. Edited by M.V. Shuvalova, A.A. Pishchuleva, A.K. Strelkova. Samara. 2021, pp. 876–883. (In Russian).
12. Delitsyn L.M., Vlasov A.S. The need for new approaches to the use of ash from coal-fired thermal power plants. Teploenergetika. 2010. No. 4, pp. 49–55. EDN: MSUSOH (In Russian).
13. Kara-Sal B.K.O., Irgit B.B., Saryg-Ool S.M.O., Saryglar A.Sh. Increasing the porosity of ceramic wall materials with the introduction of cattle feces into the mixture. Vestnik of the Tuvan State University. No. 3. Technical and physical and mathematical sciences. 2022. No. 1 (90), pp. 6–16. (In Russian). DOI: 10.24411/2221-0458-2022-90-06-16. EDN: FKTFJR