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Numerical and Physical Simulations of a Combined Top-Bottom-Side Blown Converter

机译：顶-底-侧吹转炉组合的数值和物理模拟

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In this study, a side tuyere was introduced to investigate how it is possible to lower the mixing time and to avoid problems of a reduced stirring when using the application of slag splashing process in the combined top and bottom blown converter. Both physical and mathematical models were applied to study the flow in the bath. Specifically, the effects of a side-blowing gas jet on the bath stirring intensity was studied. The results indicate that the mixing time for a side blown converter is decreased profoundly compared to a conventional combined top and bottom blown converter. Overall, the mathematical model showed similar trends and a good agreement with that of the physical modeling data. Furthermore, the shear stress at the wall in the top-bottom-side (TBS) converter was considered, since the furnace lining is important when side blowing is used in the converter. It was found that the side wall shear stress is increased by introducing side blowing, especially in the region near the side blowing plume. Three side tuyeres with different locations in the same level did not show any obvious effects on the mixing of the bath, but showed apparent differences in the shear stress and the oscillation of the bath. Overall, the results showed that the mathematical model can be used to design the configuration of the metallurgical vessels when it is necessary to consider the oscillation and the shear stress of the bath.
机译：在这项研究中，介绍了一种侧风口，以研究在组合式顶部和底部吹制转炉中使用溅渣工艺时如何减少混合时间并避免搅拌减少的问题。物理模型和数学模型都用于研究浴中的流量。具体地，研究了侧吹气体射流对浴搅拌强度的影响。结果表明，与常规组合的顶部和底部吹塑转化器相比，侧吹式转化器的混合时间大大减少。总体而言，数学模型显示出相似的趋势，并且与物理建模数据具有良好的一致性。此外，考虑到顶底侧（TBS）转炉中壁的剪切应力，因为当转炉中使用侧吹时，炉衬很重要。已经发现，通过引入侧吹，侧壁剪切应力增加，特别是在侧吹羽流附近的区域中。在同一高度上具有不同位置的三个侧风口对浴液的混合没有显示任何明显的影响，但是在剪切应力和浴液的振荡方面显示出明显的差异。总体而言，结果表明，当需要考虑镀液的振荡和剪切应力时，该数学模型可用于设计冶金容器的配置。

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