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Estimations of Electrical Conductivities in Molten Slag Systems
Author(s) -
Wang Lijun
Publication year - 2009
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.2374/sri08sp165
Subject(s) - slag (welding) , ternary operation , chromium , materials science , metallurgy , viscosity , thermodynamics , ternary numeral system , homogeneous , surface tension , solubility , chemistry , computer science , composite material , physics , programming language
In the present paper, the electrical conductivities of molten silicates systems, CaO‐MgO‐SiO 2 , Na 2 O‐MgO‐SiO 2 , CaO‐FeO‐SiO 2 and CaO‐MgO‐MnO‐SiO 2 (SiO 2 = 45wt %) were estimated by the mass triangle method developed earlier by Chou. The computed results are compared with other approaches found in the literature. The predictions show satisfactory agreement with experimental results reported in the literature. A correlation was also made between the cation‐oxygen ion attraction parameter I and the electrical conductivities of slags. It was found that the electrical conductivity varies linearly with I when the content of transition metallic ions is less than 0.2 mole fraction. Beyond this, the effect of electronic conduction is expected to dominate. On the basis of the present approach, the electrical conductivities of higher order systems can be estimated. The approach suggested in the present paper offers a powerful tool to design slags for applications in metallurgical processes.