Experimental Study on Electrical Conductivity of MnO-CaO-SiO{sub 2} Slags at 1723 K to 1823 K (1450 °C to 1550 °C) and Various Oxygen Potentials
- Chinese Academy of Sciences, National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Key Laboratory of Green Process and Engineering, Institute of Process Engineering (China)
- University of Science and Technology Beijing, State Key Laboratory of Advanced Metallurgy (China)
The electrical conductivity of molten slag has many important and practical effects in modeling and operating the electric smelting furnace. In the present study, the electrical conductivities (total and electronic/ionic properties) of MnO-CaO-SiO{sub 2} slags were measured by a four-electrode method at different oxygen potentials and temperatures. Experimental results show that the effects of temperature on the total, electronic, and ionic conductivities obey the Arrhenius law, and all conductivities increase when increasing the temperature. The stepped potential chronoamperometry method was used to measure the electronic transference number, which is affected strongly by oxygen potential but is unaffected by temperature. The total electrical, electronic, and ionic conductivities present similar increasing trends when increasing the CO/CO{sub 2} ratio, which resulted from increasing Mn{sup 2+}.
- OSTI ID:
- 22856090
- Journal Information:
- Metallurgical and Materials Transactions B, Process Metallurgy and Materials Processing Science, Vol. 48, Issue 6; Other Information: Copyright (c) 2017 The Minerals, Metals & Materials Society and ASM International; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 1073-5615
- Country of Publication:
- United States
- Language:
- English
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