Melt azimuthal rotation in direct current electric arc furnace without external axial magnetic field

IF 17.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-01-30 DOI:10.3233/jae-230173

S. Pavlovs, A. Jakovičs, Alexander Chudnovsky

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Abstract

This paper considers the azimuthal rotation of melt about the vertical axis of a DC EAF, which is ensured by an inclined installation of the power supply electrodes, which is a patented solution that is the basis for this article. Near inclined electrodes, the Lorentz force has a pronounced azimuthal component, which is the driver of the melt rotation without an external axial magnetic field – thus, additional energy consumption to create an external magnetic field is not necessary. The main design and technological solutions, formulated in the patent and presented by the authors, were obtained using observations and numerical LES study for a laboratory-scale experimental setup (capacity 4.8 kg of GaInSn), as well as using LES computations for an industrial-scale DC EAF (capacity 3.6 t of molten steel). Basic technological solutions studied: the flow of the melt may be controlled by varying the number of vertical and inclined electrodes of DC EAF, choosing the angle of inclination of the electrodes as well as choosing the sequence of turning on and turning off power supply through the electrodes.

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无外部轴向磁场的直流电弧炉中的熔体方位旋转

本文探讨了直流电弧炉熔体绕垂直轴的方位旋转问题，供电电极的倾斜安装确保了熔体的方位旋转，这是一种专利解决方案，也是本文的基础。在倾斜电极附近，洛伦兹力具有明显的方位角分量，它是熔体在没有外部轴向磁场的情况下旋转的驱动力，因此无需消耗额外的能量来产生外部磁场。作者在专利中提出的主要设计和技术解决方案，是通过对实验室规模的实验装置（容量为 4.8 千克 GaInSn）进行观察和数值 LES 研究，以及对工业规模的直流电弧炉（容量为 3.6 吨钢水）进行 LES 计算而获得的。研究的基本技术解决方案：可通过改变直流电弧熔炉垂直和倾斜电极的数量、选择电极的倾斜角度以及选择通过电极打开和关闭电源的顺序来控制熔液的流动。

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.