Numerical Investigation on Transient Flow and Inclusion Removal Behavior in Tundish During Ladle Change Process

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-08-19 DOI:10.1002/srin.202400471

Zhi‐Xiao Zhang, Han Wang, Tian‐Peng Qu, De‐Yong Wang, Xiang‐Long Li, Shao‐Yan Hu, Jun Tian, Xing‐Zhi Zhou, Zheng‐Hong Yang

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Abstract

The removal of inclusion particles is an important function of tundish metallurgy. During ladle change, the liquid level fluctuation around the ladle shroud is severe, which may affect the effectiveness of inclusion removal. In the present study, the fluid flow characteristics and inclusion‐removal behavior in the tundish during ladle change are investigated by numerical simulation method. And the effectiveness of flow control devices on the flow characteristics of molten steel is evaluated. It is found that the escape rate of inclusion particles during ladle change is ordered as emptying process < steady process < filling process. The proper combination of weir, dam, and turbulence inhibitor can optimize the conditions for the floating and removal of inclusion particles to the greatest extent. In the tundish with weir and dam, the escape rates of inclusion particles with sizes of 10, 50, and 100 μm throughout the entire ladle change period are respectively reduced by 9.8%, 1.6%, and 1.4%, compared to not using flow control devices. With a combination of weir, dam, and turbulence inhibitor, the escape rates of the three types of inclusion particles are reduced by 24.7%, 9.9%, and 1.2%, respectively.

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钢包更换过程中中间包内瞬态流动和夹杂物去除行为的数值研究

去除夹杂物颗粒是钢包冶金的一项重要功能。在钢包更换过程中，钢包护罩周围的液面波动剧烈，可能会影响夹杂物的去除效果。本研究采用数值模拟方法研究了换包过程中中间包内的流体流动特性和夹杂物去除行为。并评估了流量控制装置对钢水流动特性的影响。研究发现，钢包更换过程中夹杂颗粒的逸出率依次为排空过程、稳定过程和充填过程。堰、坝和湍流抑制剂的适当组合可以最大程度地优化夹杂颗粒的上浮和清除条件。在带有堰和坝的中间包中，与不使用流量控制装置相比，在整个钢包更换期间，尺寸为 10、50 和 100 μm 的夹杂颗粒的逸出率分别降低了 9.8%、1.6% 和 1.4%。结合使用堰、坝和湍流抑制器，三种夹杂颗粒的逃逸率分别降低了 24.7%、9.9% 和 1.2%。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.