The Electrical Conductivity of High Titanium Slag

Abstract

The electrical conductivity of molten slags of high titanium content and of various FeO contents was measured by the four-terminal method. The measured range of temperature was 1450∼1200°. The specific electrical conductivity is 5∼12 Ω⁻¹ cm⁻¹, which is very high as compared with the ordinary slags of pig-iron making. In molten state the conductivity decreases with temperature, but in the neighbourhood of the solidifying temperature two sorts of anomalous changes appear. The minimum conductivity value was found to lie at the composition of 23 pct FeO, which coincides with the composition dividing the composition range into two parts according to the sorts of the above-mentioned anomalous changes. The electronic conduction in terms of valency exchange may be predominant in the present system. The conductivity data and the mechanism of conduction have great significances in the design and the practical operation of an electric furnace making high titanium slag.