Changes of the phase and chemical compositions as well as the course of strengthening on heating of mixtures of pyrophyllitic raw material from the Kul’-Yurt-Tau deposit and, for comparison, the Ovruchskoe deposit with a phosphate binder are studied. It is shown that these materials exhibit similar behavior. The optimal amount of binder to obtain a strong pressed intermediate product is determined. The composites must be heat-treated at temperatures 500 – 600°C in order to attain water resistance and the required strength.
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V. P. Perepelitsyn, Yu. E. Pivinskii, A. D. Burabov, et al., “Pyrophyllite from the Urals — a new refractory and ceramic raw materials in Russia,” Novye Ogneupory, No. 9, 64–68 (2005).
V. S. Bakunov, A. R. Murzakova, R. U. Shayakhmetov, and L. V. Yakupova, “Pyrophyllitic raw material from the Kul’-Yurt-Tau deposit as a basis for ceramic composites,” Steklo Keram., No. 12, 23 – 27 (2011); V. S. Bakunov, A. R. Murzakova, R. U. Shayakhmetov, and L. V. Yakupova, “Pyrophyllitic raw materials from the Kul’-Yurt-Tau deposit as a base for ceramic composites,” Glass Ceram., 68(11–12), 405–409 (2012).
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Translated from Steklo i Keramika, No. 10, pp. 15 – 18, October, 2012.
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Bakunov, V.S., Shayakhmetov, U.S., Murzakova, A.R. et al. Obtaining composites based on pyrophyllite from the Kul’-Yurt-Tau deposit and phosphate binder. Glass Ceram 69, 333–336 (2013). https://doi.org/10.1007/s10717-013-9473-1
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DOI: https://doi.org/10.1007/s10717-013-9473-1