Mineral transition and formation mechanism of calcium aluminate compounds in CaO−Al2O3−Na2O system during high-temperature sintering

Hai-yan Yu; Xiao-lin Pan; Yong-pan Tian; Gan-feng Tu

doi:10.1007/s12613-019-1951-1

Volume 27 Issue 7

Jul. 2020

Turn off MathJax

Article Contents

Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2020 > 27(7): 924-932

Hai-yan Yu, Xiao-lin Pan, Yong-pan Tian, and Gan-feng Tu, Mineral transition and formation mechanism of calcium aluminate compounds in CaO−Al₂O₃−Na₂O system during high-temperature sintering, Int. J. Miner. Metall. Mater., 27(2020), No. 7, pp. 924-932. https://doi.org/10.1007/s12613-019-1951-1

Cite this article as:

Hai-yan Yu, Xiao-lin Pan, Yong-pan Tian, and Gan-feng Tu, Mineral transition and formation mechanism of calcium aluminate compounds in CaO−Al2O3−Na2O system during high-temperature sintering, Int. J. Miner. Metall. Mater., 27(2020), No. 7, pp. 924-932. https://doi.org/10.1007/s12613-019-1951-1

Citation:

PDF( 1422 KB)

Research Article

Mineral transition and formation mechanism of calcium aluminate compounds in CaO−Al₂O₃−Na₂O system during high-temperature sintering

+ Author Affiliations

Corresponding author:
Xiao-lin Pan E-mail: panxl@smm.neu.edu.cn
Received: 4 September 2019; Revised: 21 November 2019; Accepted: 25 November 2019; Available online: 8 January 2020

Abstract

Abstract

The mineral transition and formation mechanism of calcium aluminate compounds in CaO−Al₂O₃−Na₂O system during the high-temperature sintering process were systematically investigated using DSC−TG, XRD, SEM−EDS, FTIR, and Raman spectra, and the crystal structure of Na₄Ca₃(AlO₂)₁₀ was also simulated by Material Studio software. The results indicated that the minerals formed during the sintering process included Na₄Ca₃(AlO₂)₁₀, CaO·Al₂O₃, and 12CaO·7Al₂O₃, and the content of Na₄Ca₃(AlO₂)₁₀ could reach 92wt% when sintered at 1200°C for 30 min. The main formation stage of Na₄Ca₃(AlO₂)₁₀ occurred at temperatures from 970 to 1100°C, and the content could reach 82wt% when the reaction temperature increased to 1100°C. The crystal system of Na₄Ca₃(AlO₂)₁₀ was tetragonal, and the cells preferred to grow along crystal planes (110) and (210). The formation of Na₄Ca₃(AlO₂)₁₀ was an exothermic reaction that followed a secondary reaction model, and its activation energy was 223.97 kJ/mol.
- calcium aluminate;
- sodium oxide;
- crystal structure;
- formation kinetics;
- sintering

FullText(HTML)

Supplements(0)

References(24)

References

[1]	N.K. Lee, K.T. Koh, S.H. Park, and G.S. Ryu, Microstructural investigation of calcium aluminate cement-based ultra-high performance concrete (UHPC) exposed to high temperatures, Cem. Concr. Res., 102(2017), p. 109. doi: 10.1016/j.cemconres.2017.09.004
[2]	Y.Y. Zhang, W. Lü, Y.H. Qi, and Z.S. Zou, Recovery of iron and calcium aluminate slag from high-ferrous bauxite by high-temperature reduction and smelting process, Int. J. Miner. Metall. Mater., 23(2016), No. 8, p. 881. doi: 10.1007/s12613-016-1303-3
[3]	R.M. Parreira, T.L. Andrade, A.P. Luz, V.C. Pandolfelli, and I.R. Oliveira, Calcium aluminate cement-based compositions for biomaterial applications, Ceram. Int., 42(2016), No. 10, p. 11732. doi: 10.1016/j.ceramint.2016.04.092
[4]	J.H. Chen, H.Y. Chen, M.W. Yan, Z. Cao, and W.J. Mi, Formation mechanism of calcium hexaluminate, Int. J. Miner. Metall. Mater., 23(2016), No. 10, p. 1225. doi: 10.1007/s12613-016-1342-9
[5]	B. Hallstedl, Assessment of the CaO−Al₂O₃ system, J. Am. Ceram. Soc., 73(1990), No. 1, p. 15. doi: 10.1111/j.1151-2916.1990.tb05083.x
[6]	X.L. Pan, D. Zhang, Y. Wu, and H.Y. Yu, Synthesis and characterization of calcium aluminate compounds from gehlenite by high-temperature solid-state reaction, Ceram. Int., 44(2018), No. 12, p. 13544. doi: 10.1016/j.ceramint.2018.04.186
[7]	H. Verweij and C.M.P.M. Saris, Phase formation in the system Na₂O·Al₂O₃−CaO·A1₂O₃−Al₂O₃ at 1200 °C in air, J. Am. Ceram. Soc., 69(1986), No. 2, p. 94. doi: 10.1111/j.1151-2916.1986.tb04708.x
[8]	D. Zhang, W. Zhang, H.L. Sun, and B. Wang, Mineral transition mechanism of calcium aluminate with sodium doping during high-temperature sintering reaction, J. Alloys Compd., 771(2019), p. 195. doi: 10.1016/j.jallcom.2018.08.260
[9]	J. Yang, Q. Wang, J.Q. Zhang, O. Ostrovski, C. Zhang, and D.X. Cai, Effect of Al₂O₃/(B₂O₃ + Na₂O) ratio on CaO−Al₂O₃-based mold fluxes: Melting property, viscosity, heat transfer, and structure, Metall. Mater. Trans. B, 50(2019), No. 6, p. 2794. doi: 10.1007/s11663-019-01711-z
[10]	J. Shen, L. Gong, and Q.X. Li, Structure and antibacterial property of Na₂O doped C₁₂A₇, Chin. J. Inorg. Chem., 27(2011), No. 2, p. 353.
[11]	C. Ostrowski and J. Żelazny, Solid solutions of calcium aluminates C₃A, C₁₂A₇ and CA with sodium oxide, J. Therm. Anal. Calorim., 75(2004), No. 3, p. 867. doi: 10.1023/B:JTAN.0000027182.40442.fe
[12]	H.Y. Yu, X.L. Pan, B. Wang, W. Zhang, H.L. Sun, and S.W. Bi, Effect of Na₂O on the formation of calcium aluminates in CaO−Al₂O₃−SiO₂ system, Trans. Nonferrous Met. Soc. China, 22(2012), No. 12, p. 3108. doi: 10.1016/S1003-6326(11)61578-1
[13]	D. Zhang, X.L. Pan, H.Y. Yu, and Y.C. Zhai, Mineral transition of calcium aluminate clinker during high-temperature sintering with low-lime dosage, J. Mater. Sci. Technol., 31(2015), No. 12, p. 1244. doi: 10.1016/j.jmst.2015.10.012
[14]	Y.P. Tian, X.L. Pan, H.Y. Yu, and G.F. Tu, Formation mechanism of calcium aluminate compounds based on high-temperature solid-state reaction, J. Alloys Compd., 670(2016), p. 96. doi: 10.1016/j.jallcom.2016.02.059
[15]	P. McMillan and B. Piriou, Raman spectroscopy of calcium aluminate glasses and crystals, J. Non-Cryst. Solids, 55(1983), No. 2, p. 221. doi: 10.1016/0022-3093(83)90672-5
[16]	K. Kajihara, S. Matsuishi, K. Hayashi, M. Hirano, and H. Hosono, Vibrational dynamics and oxygen diffusion in a nanoporous oxide ion conductor 12CaO·7Al₂O₃ studied by ¹⁸O labeling and micro-Raman spectroscopy, J. Phys. Chem. C, 111(2007), No. 40, p. 14855. doi: 10.1021/jp074248n
[17]	P. McMillan, B. Piriou, and A. Navrotsky, A Raman-spectroscopic study of glasses along the joins silica−calcium aluminate, silica−sodium aluminate, and silica−potassium aluminate, Geochim. Cosmochim. Acta, 46(1982), No. 11, p. 2021. doi: 10.1016/0016-7037(82)90182-X
[18]	A. Meiszterics, L. Rosta, H. Peterlik, J. Rohonczy, S. Kubuki, P. Henits, and K. Sinkó, Structural characterization of gel-derived calcium silicate systems, J. Phys. Chem. A, 114(2010), No. 38, p. 10403. doi: 10.1021/jp1053502
[19]	L. Zhang, R. Lan, C.T.G. Petit, and S.W. Tao, Durability study of an intermediate temperature fuel cell based on an oxide−carbonate composite electrolyte, Int. J. Hydrogen Energy, 35(2010), No. 13, p. 6934. doi: 10.1016/j.ijhydene.2010.04.026
[20]	M.A. Legodi, D. de Waal, J.H. Potgieter, and S.S. Potgieter, Rapid determination of CaCO₃ in mixtures utilising FT-IR spectroscopy, Miner. Eng., 14(2001), No. 9, p. 1107. doi: 10.1016/S0892-6875(01)00116-9
[21]	S. Vyazovkin and C.A. Wight, Isothermal and non-isothermal kinetics of thermally stimulated reactions of solids, Int. Rev. Phys. Chem., 17(1998), No. 3, p. 407. doi: 10.1080/014423598230108
[22]	Š. Zuzjaková, P. Zeman, and Š. Kos, Non-isothermal kinetics of phase transformations in magnetron sputtered alumina films with metastable structure, Thermochim. Acta, 572(2013), p. 85. doi: 10.1016/j.tca.2013.09.019
[23]	M.J. Cran, S.R. Gray, J. Scheirs, and S.W. Bigger, Non-isothermal depolymerisation kinetics of poly(ethylene oxide), Polym. Degrad. Stab., 96(2011), No. 8, p. 1497. doi: 10.1016/j.polymdegradstab.2011.05.004
[24]	B.A. Sava, M. Elisa, C. Bartha, R. Iordanescu, I. Feraru, C. Plapcianu, and R. Patrascu, Non-isothermal free-models kinetic analysis on crystallization of europium-doped phosphate glasses, Ceram. Int., 40(2014), No. 8, p. 12387. doi: 10.1016/j.ceramint.2014.04.089