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- Title
Experimental Study on Electrical Conductivity of MnO-CaO-SiO Slags at 1723 K to 1823 K (1450 °C to 1550 °C) and Various Oxygen Potentials.
- Authors
Liu, Jun-Hao; Zhang, Guo-Hua; Wang, Zhi
- Abstract
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 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 ratio, which resulted from increasing Mn.
- Subjects
ELECTRIC conductivity; IONIC conductivity measurement; ARRHENIUS equation; CHRONOAMPEROMETRY; SMELTING furnaces
- Publication
Metallurgical & Materials Transactions. Part B, 2017, Vol 48, Issue 6, p3359
- ISSN
1073-5615
- Publication type
Article
- DOI
10.1007/s11663-017-1072-z