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首页> 外文期刊>ISIJ international >A Kinetic Model of Mass Transfer and Chemical Reactions at a Steel/Slag Interface under Effect of Interfacial Tensions
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A Kinetic Model of Mass Transfer and Chemical Reactions at a Steel/Slag Interface under Effect of Interfacial Tensions

机译：界面张力作用下钢/渣界面传质和化学反应的动力学模型

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摘要

A new kinetic model was developed to predict the dynamic change of the interfacial oxygen content and the steel/slag interfacial tension. This model mainly describes the following interfacial physicochemical phenomena: ⅰ) Silica decomposition and oxygen adsorption at the interface, ⅱ) Oxygen and aluminum reactions at the interface, ⅲ) Oxygen desorption from the interface, ⅳ) Silica mass transfer from the slag to the interface, ⅴ) Dissolution of the formed alumina into the slag and its transfer in slag and ⅵ) Blockage on the silica mass transfer, to come in contact with the steel, by the accumulation of the formed alumina at the interface. With this model, the dynamic changes of the interfacial oxygen contents under different aluminum contents in steel and different slag viscosities were predicted. Overall, the interfacial oxygen content was found to increase with a decreased aluminum content and a decreased slag viscosity. Furthermore, the aluminum reaction rate can significantly influence the interfacial oxygen content as well as the interfacial tension. In addition, the model captured the fast increase of the interfacial tension after passing the minimum value point for the system of a high-Al content steel and a low viscous slag, which is in agreement with the experimental observations. Furthermore, a parameter study was carried out to show the influence of various parameters on the dynamic interfacial phenomena.
机译：建立了一个新的动力学模型来预测界面含氧量和钢/渣界面张力的动态变化。该模型主要描述了以下界面物理化学现象：ⅰ）界面处的二氧化硅分解和氧吸附，ⅱ）界面处的氧和铝反应，ⅲ）界面处的氧气脱附，ⅳ）二氧化硅从炉渣到界面的传质，ⅴ）将形成的氧化铝溶解到炉渣中并在炉渣中转移；以及ⅵ）由于形成的氧化铝在界面处的积聚，阻碍了二氧化硅传质，使其与钢接触。利用该模型，可以预测钢中不同铝含量和不同炉渣粘度下界面氧含量的动态变化。总的来说，发现界面氧含量随着铝含量的降低和炉渣粘度的降低而增加。此外，铝的反应速率可以显着影响界面氧含量以及界面张力。此外，该模型在通过高铝含量钢和低粘渣系统的最小值之后，捕获了界面张力的快速增加，这与实验观察一致。此外，进行了参数研究，以显示各种参数对动态界面现象的影响。

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  • 来源
    《ISIJ international》 |2019年第5期|737-748|共12页
  • 作者

    Peiyuan Nl; Toshihiro TANAKA; Masanori SUZUKI; Masashi NAKAMOTO; Paer Goeran JOENSSON;

  • 作者单位

    Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka, 565-0871 Japan;

    Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka, 565-0871 Japan;

    Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka, 565-0871 Japan;

    Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka, 565-0871 Japan;

    Department of Materials Science and Engineering, KTH Royal Institute of Technology, Stockholm, 10044 Sweden;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    steel-slag interfacial tension; mass transfer; thermodynamics and kinetics; interfacial reactions; dynamic modeling;

    机译：钢渣界面张力传质热力学和动力学;界面反应;动态建模;

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