Effect of the Tundish Inhibitor Design on the Flotation Efficiency of Nonmetallic Inclusions: Water Modeling and Mathematical Simulations by the Reynolds Stress Model

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-08-29 DOI:10.1002/srin.202400087

Alfonso Nájera‐Bastida, Rodolfo Dávila Morales, Javier Guarneros‐Guarneros, Jafeth Rodríguez‐Ávila, Oscar Joaquín Solís‐Marcial

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Abstract

Numerical fluid simulations using the Reynolds stress model and water model experiments are conducted to test different designs of tundish turbulence inhibitors (A, B, C, D, and E) for their effectiveness in removing nonmetallic inclusions from steel. The results reveal a unique flow pattern, with a mushroom‐like shape forming around the entry jet. The acceleration of small eddies within this mushroom is a significant factor in inclusion removal. This discovery has practical implications for the steel industry, leading to a longer residence time in the entry jet mushroom and improved inclusion flotation performance. Additionally, the turbulent kinematic viscosity and Reynolds stress fields in the flow mushroom influence the tracer's local dispersion rate and the interactions of the inclusions in this region. These findings are further validated using a tundish water model to track the dynamics of amine particles injected into the ladle shroud, enhancing their practical relevance.

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槽底抑制剂设计对非金属夹杂物浮选效率的影响：水模型和雷诺应力模型的数学模拟

利用雷诺应力模型和水模型试验进行了数值流体模拟，以测试不同设计的连铸湍流抑制剂（A、B、C、D 和 E）去除钢中非金属夹杂物的效果。结果发现了一种独特的流动模式，即在入口射流周围形成蘑菇状。蘑菇状流体中的小涡流加速是去除夹杂物的一个重要因素。这一发现对钢铁行业具有实际意义，可延长进入射流蘑菇状流体的停留时间，提高夹杂物浮选性能。此外，流菇中的湍流运动粘度和雷诺应力场会影响示踪剂的局部分散率以及夹杂物在该区域的相互作用。这些研究结果通过使用中间包水模型跟踪注入钢包护罩的胺颗粒动态得到了进一步验证，从而增强了其实用性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.