Abstract
As a fundamental study on properties of the FexO-bearing slags, the total electrical conductivity and electronic/ionic properties of FexO-SiO2-CaO-Al2O3 slags were measured at different oxygen potentials (controlled by CO-CO2 mixture gas) and temperatures by using four-electrode method. From experiments results, it can be seen that the total conductivity changes little as increasing the ratio of CO to CO2 (decreasing the oxygen potential), while the electronic and ionic conductivities of all slags decreases and increases monotonously, respectively. The temperature dependences of the total electrical conductivity, electronic, and ionic conductivities follow the Arrhenius law. It was also found that with increasing CaO/Al2O3 ratio, the total electrical conductivity and ionic conductivity firstly decrease and then increase, while electronic conductivity firstly almost keeps constant but then increases from CaO/Al2O3=1. The minimum values of the total electrical conductivity and ionic conductivity occurs near the ratio of CaO/Al2O3 = 1, which is mainly resulted from the charge compensation effect of Al3+ ions.
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Zhang, GH., Liu, JH., Chou, KC. (2016). Study on Electrical Conductivity of CaO-SiO2-Al2O3-FeOx Slags. In: Reddy, R.G., Chaubal, P., Pistorius, P.C., Pal, U. (eds) Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016. Springer, Cham. https://doi.org/10.1007/978-3-319-48769-4_145
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DOI: https://doi.org/10.1007/978-3-319-48769-4_145
Publisher Name: Springer, Cham
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