Effects of Temperature and Duration of Anorthite Synthesis from Mixtures of Kaolin and Calcite
Tóm tắt
In this research, the effects of temperature and duration of anorthite synthesis were examined by DTA, TGA, XRD, SEM and EDS analysis. Anorthite was synthesized with mixtures of kaolin and calcite powders with a weight ratio of 7 to 3, at three different temperatures of 1000, 1200 and 1400 °C, and three different synthesis times of 30, 180 and 300 min. Different phases in the raw materials mixture were formed during synthesis. These phases were investigated thoroughly to determine the role of time and temperature in their formation. Results proved that synthesis at 3 h and 1200 °C was suitable for the reactions of anorthite formation.
Tài liệu tham khảo
P. Ptáček, T. Opravil, F. Šoukal, J. Havlica, R. Holešinský, Kinetics and mechanism of formation of gehlenite, Al–Si spinel and anorthite from the mixture of kaolinite and calcite. Solid State Sci. 26, 53–58 (2013). https://doi.org/10.1016/j.solidstatesciences.2013.09.014
A.F. Qasrawi, Production of anorthite from kaolinite and CaCO3 via colemanite. in 8th Conference of the European-Ceramic-Society (2004). https://doi.org/10.4028/www.scientific.net/KEM.264-268.1475
K. Okada, N. Watanabe, K.V. Jha, Y. Kameshima, A. Yasumori, K.J.D. MacKenzie, Effects of grinding and firing conditions on CaAl2Si2O8 phase formation by solid-state reaction of kaolinite with CaCO3. Appl. Clay Sci. 23(5-6), 329–336 (2003). https://doi.org/10.1016/S0169-1317(03)00132-7
R. Ceylantekin, Production of mono-anorthite phase through mechanical activation. Ceram. Int. 41(1), 353–361 (2015). https://doi.org/10.1016/j.ceramint.2014.08.078
K. Okada, N. Watanabe, V.K. Jha, Y. Kameshima, A. Yasumori, K.J.D. MacKenzie, Uptake of various cations by amorphous CaAl2Si2O8 prepared by solid-state reaction of kaolinite with CaCO3. J. Mater. Chem. 13(3), 550–556 (2003). https://doi.org/10.1039/B208796K
M.G.M.U. Ismail, H. Arai, Sol-gel synthesis of B2O3-doped anorthite and its characteristics. J. Ceram. Soc. Japan 100(1168), 1385–1389 (1992). https://doi.org/10.2109/jcersj.100.1385
Y. Kobayashi, E. Kato, Low-temperature fabrication of anorthite ceramics. J. Am. Ceram. Soc. 77(3), 833–834 (1994). https://doi.org/10.1111/j.1151-2916.1994.tb05373.x
S. Kavalcı, The use of boron-containing additives for synthesis of anorthite ceramic powders. Master's thesis, İzmir Institute of Technology, 2006. http://hdl.handle.net/11147/3409
R.C. Mackenzie, A.A. Rahman, Interaction of kaolinite with calcite on heating: I. instrumental and procedural factors for one kaolinite in air and nitrogen. Thermochim. Acta 121, 51–69 (1987). https://doi.org/10.1016/0040-6031(87)80161-2
E.F. Osborn, A. Muan, in Phase Diagrams for Ceramists, vol. 1, ed. by E.M. Levin, C.R. Robbins, H.F. Mc-Murdie (1964), p. 219
R.A. Gdula, Anorthite ceramic dielectrics. Am. Ceram. Soc. Bull. 50(6), 555 (1971)
G. Dresen, Z. Wang, Q. Bai, Kinetics of grain growth in anorthite. Tectonophysics 258(1–4), 251–262 (1996). https://doi.org/10.1016/0040-1951(95)00203-0
K. Traore, T.S. Kabre, P. Blanchart, Gehlenite and anorthite crystallisation from kaolinite and calcite mix. Ceram. Int. 29(4), 377–383 (2003). https://doi.org/10.1016/S0272-8842(02)00148-7
C.-W. Wu, C.-J. Sun, S.-H. Gau, C.-L. Hong, C.-G. Chen, Mechanochemically induced synthesis of anorthite in MSWI fly ash with kaolin. J. Hazard. Mater. 244, 412–420 (2013). https://doi.org/10.1016/j.jhazmat.2012.11.052