Electrical Conductivity and Electronic/Ionic Properties of TiO x -CaO-SiO2 Slags at Various Oxygen Potentials and Temperatures
Abstract
The electrical conductivity of molten slags is an extremely important factor in the design of electric smelting furnaces. As a fundamental study on properties of the TiO x -bearing slags, the total electrical conductivity and electronic/ionic properties of TiO x -SiO2-CaO slags were measured at different oxygen potentials and temperatures using four-electrode method. The experiment results show that for a specific composition, the temperature dependences of ionic, electronic, and total conductivity obey the Arrhenius law. The stepped potential chronoamperometry method was employed for measuring the electronic transference number, which exhibits a strong dependence on oxygen potential, but is unaffected by temperature. The total electrical, electronic, and ionic conductivities present similar increasing trends with increasing the ratio of CO/CO2, which is resulted from increasing of Ti3+.
- Publication:
-
Metallurgical and Materials Transactions B
- Pub Date:
- February 2016
- DOI:
- 10.1007/s11663-015-0499-3
- Bibcode:
- 2016MMTB...47..798L