Electrical Conductivity in Ionic Liquids

Electrical conductivity (ELCD) of ionic liquids can be calculated using Thermo-Calc and the TCS Metal Oxide Solutions Database (TCOX). Below are examples of how this is simulated.

The electrical conductivity for ionic liquids thermophysical property data is included starting with version 13 (TCOX13).

Fe-O-SiO2

By changing the partial pressure of oxygen, the electrical conductivity of iron silicate slags was measured by Pastukhov et al. [1966Pas] and Fontana et al. [1984Fon]. The present model can well reproduce the measurements. The comparisons between the calculated electrical conductivity and experimental data are shown as the amount of Fe+3 changes.

Calculated electrical conductivity of iron silicate slags at 1623 K, compared with the measurements

Figure 1: Calculated electrical conductivity of iron silicate slags at 1623 K, compared with the measurements by [1984Fon] and [1966Pas].

CaO-MgO-Al2O3-SiO2

In most pyrometallurgical processes, CMAS containing slags are used as the base. Due to its significance, the properties of viscosity, surface tension and electrical conductivity have been measured by several work. The electrical conductivity of three CMAS slags were investigated by Winterhager et al. [1966Win] and Hundermark [2003Hun].

Calculated temperature dependence of electrical conductivity of CaO-MgO-Al2O3-SiO2 slags, compared with the measurements

Figure 2: Calculated temperature dependence of electrical conductivity of CaO-MgO-Al2O3-SiO2 slags, compared with the measurements from [1966Win] and [2003Hun].

References

[1966Pas] E. Pastukhov, O. Esin, S. Chuchmarev, Electric conductivity of silicate melts containing iron oxides. Elektrokhimiya. 2, 209–215 (1966).

[1966Win] H. Winterhager, L. Greiner, R. Kammel, Investigations of the density and electrical conductivity of melts in the system CaO-Al2O3-SiO2 and CaO-MgO-Al2O3-SiO2 (Westdeutscher Verlag, Cologne, 1966).

[1984Fon] A. Fontana, L. Segers, K. Twite, R. Winand, Electrical conductivity of ferrous silicate melts from slag cleaning operations, in TMS-AIME Paper Selection, Paper no A84-38 (1984): 13 pp.

[2003Hun] R. Hundermark, The electrical conductivity of melter type slags, Master's thesis, University of Cape Town (2003).