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A Pseudo-Multicomponent Approach to Important Ternary Silicate Melts

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Abstract

For the CaO-Al2O3-SiO2, CaO-FeO-SiO2, and MnO-FeO-SiO2 ternary silicate melts, there are few models that can accurately predict their component activities. One model that can make a good correlation between the ternary activities and their sub-binary ones is a pseudo-multicomponent approach based on the molecular interaction volume model (MIVM). It does not need any linear or power series composition functions of binary parameters and also does not require any ternary adjustable parameters in addition to its composition equation. The results show that in the CaO-Al2O3-SiO2 system, the predicted values of SiO2 activity are in good agreement with the experimental data at 1873 K (1600 °C), and those of CaO and Al2O3 are in reasonable agreement with the graphical integration of data using the Gibbs–Duhem equation at 1873 K (1600 °C) and experimental data at 1823 K (1550 °C). In the CaO-FeO-SiO2 and MnO-FeO-SiO2 systems, the predicted values of FeO and MnO activity are in good agreement with the experimental data, and those of CaO and SiO2 are in reasonable agreement with the experimental data at 1823 K, 1873 K, and 1803 K (1550 °C, 1600 °C, and 1533 °C).

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This work was financially supported by the National Natural Science Foundation of China under grant no. 51090381 and grand no. 50764006.

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  1. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, Yunnan Province, P.R. China

    Dong-Ping Tao (Professor)

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  1. Dong-Ping Tao
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Correspondence to Dong-Ping Tao.

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Manuscript submitted February 13, 2012.

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Tao, DP. A Pseudo-Multicomponent Approach to Important Ternary Silicate Melts. Metall Mater Trans B 43, 1247–1261 (2012). https://doi.org/10.1007/s11663-012-9719-2

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