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Journal of University of Science and Technology Beijing. 2014, (04) Core

Numerical simulation of condensed Al2O3 inclusion motion behavior in liquid steel in a continuous casting tundishChinese Full Text

WANG Yao;LI Hong;GUO Luo-fang;State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing;School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing;

Abstract: Under the Euler-Lagrange framework,based on the quantitative description of inclusion morphology using the fractal theory,the motion behavior of condensed Al2O3inclusions in liquid steel in a continuous casting tundish was studied by numerical simulation. It is found that liquid steel flow field and inclusion morphology influence the motion behavior of Al2O3inclusions in liquid steel together. With increasing inclusion size,the floating removal rate of two different morphologies of inclusions,cluster-like Al2O3inclusions and spherical Al2O3inclusions,becomes larger gradually. At the same inclusion size,the floating removal rate of cluster-like Al2O3inclusions is lower than that of spherical Al2O3inclusions. As the inclusion size increases,the floating removal rate of clusterlike Al2O3inclusions decreases more than that of spherical Al2O3inclusions with the same size. At the inclusion size of 20,40,60 and 80 μm,the floating removal rate of cluster-like Al2O3inclusions decreases by 4. 8%,5. 7%,6. 4% and 12. 5% compared with spherical Al2O3inclusions,respectively.
Keywords：

continuous casting; tundishes; fractal dimension; alumina; inclusions; numerical analysis;

  • DOI：

    10.13374/j.issn1001-053x.2014.04.003

  • Series：

  • Subject：

  • Classification Code：

    TF777

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