Simulation on Desulfurization of Molten Iron with Bottom Blown-Mechanical Stirring Coupled

doi:10.12068/j.issn.1005-3026.2018.06.012

Abstract

Abstract: To understand the interaction between bubble and melt in desulfurization of hot metal pretreatment with bottom blown-mechanical stirring coupled， the CFD commercial software Fluent 15.0 and physical simulation method were used to study on desulfurization process of 120t bottom blown ladle. The influence of impeller structure， rotation speed， gas flow rate， eccentricity on the mixing effect of molten steel in ladle was investigated from the aspects of flow field and gas volume distribution. The results showed that， under the conditions of using the SSB-D impeller， the rotation speed of 200r/min， the gas flow rate of 1.5m³/h and the eccentricity of 0.4， the flow field distribution in the molten iron is more uniform while the magnesium vapor bubbles are more dispersed and refined in the molten iron. The gas-liquid contact area of magnesium vapor and hot metal is increased to improve the desulfurization efficiency of magnesium vapor.

Key words: bottom blown, mechanical stirring, bubble micro refinement, desulfurization, numerical simulation

CLC Number:

TQ028.17

WANG Kun， LIU Yan， ZHANG Ting-an. Simulation on Desulfurization of Molten Iron with Bottom Blown-Mechanical Stirring Coupled[J]. Journal of Northeastern University Natural Science, 2018, 39(6): 818-822.

References

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