Effect of thermochemical activation of clay raw materials on phase formation, microstructure and properties of aluminosilicate proppants / T. V. Vakalova [et al.]

Уровень набора: Applied Clay ScienceАльтернативный автор-лицо: Vakalova, T. V., Chemical Engineer, Professor of Tomsk Polytechnic University, Doctor of Technical Sciences, 1956-, Tatyana Viktorovna;Reshetova, A. A., Chemical Engineer, Senior Lecturer of Tomsk Polytechnic University, Candidate of technical sciences, 1983-, Antonina Aleksandrovna;Revva, I. B., Chemical Engineer, Associate Professor of Tomsk Polytechnic University, Candidate of technical sciences, 1979-, Inna Borisovna;Rusinov, P. G., Pavel Gennadjevich;Balamygin, D. I., Dmitry IvanovichКоллективный автор (вторичный): Национальный исследовательский Томский политехнический университет, Инженерная школа новых производственных технологий, Научно-образовательный центр Н. М. Кижнера;Национальный исследовательский Томский политехнический университет, Институт неразрушающего контроля, Учебно-методический отделЯзык: английский.Страна: .Резюме или реферат: In this study, the complex influence of the preliminary calcination temperature of refractory clay raw materials and mineralizing oxide additives on phase formation, microstructure and properties of aluminosilicate proppants was researched. The morphology structure and phase composition of specimens were investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results show that the effectiveness on the addition of 3d-transition element oxides (Fe2O3 and MnO2) and alkaline and alkaline earth oxides (Na2O, MgO, CaO) and B2O3 to the sintering process of samples based on kaolin depends on the temperature of preliminary kaolin calcination (900-1100 °C) and temperature sample sintering (1350-1450°C). Based on the effectiveness of the influence on aluminosilicate ceramic sintering at the temperature range of 1400-1450°C, the recommended additives can be sequentially arranged as follows: Fe2O3 > MgO > MnO2 > Na2O > B2O3 > CaO. The thermal activity scheme for each group of mineralizer additives depending on the temperature conditions of the consolidation process has been proposed in this study. The use of mineralizing additives with kaolin calcined at a temperature range of 980-1100 °C produces lightweight aluminosilicate proppants with bulk density of up to 1.50 g/cm3 at sintering calcination of 1400-1450 °C, which can endure destructive pressures up to 52 MPa..Аудитория: .Тематика: электронный ресурс | труды учёных ТПУ | kaolin | sintering | mineralizer | proppant | microstructure | каолины | спекание | минерализаторы | микроструктура Ресурсы он-лайн:Щелкните здесь для доступа в онлайн
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In this study, the complex influence of the preliminary calcination temperature of refractory clay raw materials and mineralizing oxide additives on phase formation, microstructure and properties of aluminosilicate proppants was researched. The morphology structure and phase composition of specimens were investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results show that the effectiveness on the addition of 3d-transition element oxides (Fe2O3 and MnO2) and alkaline and alkaline earth oxides (Na2O, MgO, CaO) and B2O3 to the sintering process of samples based on kaolin depends on the temperature of preliminary kaolin calcination (900-1100 °C) and temperature sample sintering (1350-1450°C). Based on the effectiveness of the influence on aluminosilicate ceramic sintering at the temperature range of 1400-1450°C, the recommended additives can be sequentially arranged as follows: Fe2O3 > MgO > MnO2 > Na2O > B2O3 > CaO. The thermal activity scheme for each group of mineralizer additives depending on the temperature conditions of the consolidation process has been proposed in this study. The use of mineralizing additives with kaolin calcined at a temperature range of 980-1100 °C produces lightweight aluminosilicate proppants with bulk density of up to 1.50 g/cm3 at sintering calcination of 1400-1450 °C, which can endure destructive pressures up to 52 MPa.

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