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首页> 外文期刊>ISIJ international >Mathematical model for growth and removal of inclusion in a multi-tuyere ladle during gas-stirring
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Mathematical model for growth and removal of inclusion in a multi-tuyere ladle during gas-stirring

机译：搅拌过程中多风口钢包中夹杂物的生长和去除的数学模型

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摘要

A three-dimensional mathematical model has been developed to predict the growth and removal of inclusions during gas stirring in a multi-tuyere ladle. In the model, the efficiency of inclusions removal have been investigated under three different collision mechanisms of Brownian collision, turbulent collision and Stokes collision. Importance of the three approaches of wall adhesion, Stokes flotation and bubbles adhesion to remove inclusions has been analyzed. The results indicated that inclusions growth resulting from turbulent collision is most important and that effect of Stokes collision is remarkable as size of inclusions and difference in size of two particles increase, while inclusion growth resulting from Brown collision is negligible. Removal by Stokes flotation is main manner for large inclusions, while inclusion removal by wall adhesion is negligible. The smaller bubbles contribute the higher efficiency of inclusion removal.
机译：已经开发了三维数学模型，以预测在多风口钢包中进行气体搅拌期间夹杂物的生长和去除。在模型中，研究了布朗氏碰撞，湍流碰撞和斯托克斯碰撞三种不同碰撞机理下夹杂物的去除效率。分析了壁附着力，斯托克斯浮选和气泡附着力以去除夹杂物这三种方法的重要性。结果表明，湍流碰撞引起的夹杂物生长最为重要，斯托克斯碰撞的效果是显着的，因为夹杂物的大小和两个颗粒大小的差异增大，而布朗碰撞引起的夹杂物生长可以忽略不计。斯托克斯浮选去除是大型夹杂物的主要方式，而壁粘附去除夹杂物则可忽略不计。气泡越小，去除夹杂物的效率越高。

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