Theory Calculation of Diffussion Coefficient Based on Molten Slag Structure

Abstract:

The diffusion coefficients of slag constituents were calculated using Eyring equation. The Urbain slag viscosity calculation method was modified by improving the constiuents dividing method based on slag depolymerisation degree NBO/T calculation. the amphoteric oxides such as TiO₂, Cr₂O₃, Fe₂O₃, B₂O₃ and Al₂O₃ were specifically dividied into glass former part and modifier part, and the diffusion dimension was calculated according to the value of NBO/T. The results of diffusion coefficients showed that, the modified method is more accurate than the Urbain method within the calculation conditions. Based on the modified diffusion coefficient calculation method, ladle slag composition was optimized to enhance the deoxidization rate.

• Periodical: Advanced Materials Research (Volumes 284-286)
• Pages: 411-415
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.284-286.411
• Online since: July 2011
• Authors: Yi Min, De Yong Wang, Mao Fa Jiang
• Keywords: Diffusion Coefficient, Diffusion Dimension, Molten Slag Structure, Theory Calculation, Viscosity

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