Abstract
The electrical conductivity of slags containing iron oxide was measured in air, in order to clarify the behavior of ferric oxide in liquid slag. In the slags of Fe2O3-CaO-SiO2 and Fe2O3-CaO systems, the specific conductance increases with the content of Fe2O3 and with the temperature. The order of the magnitudes of the specific conductance of both systems was about from 0.1 to 0.5 and from 1.0 to 4.0 Ω−1 cm−1 at 1400°C, respectively. It seems to be probable that the electric conductance in these slags is predominantly ionic. The relation between κ and 1⁄T is generally linear. In certain kinds of slags, there is a sudden decrease in specific conductance below the solidification temperature. However, an anomalous variation of the specific conductance near the solidification temperature was observed in slags of certain compositions.
