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首页> 外文期刊>ISIJ international >A Kinetic Model to Predict the Compositions of Metal, Slag and Inclusions during Ladle Refining: Part 1. Basic Concept and Application
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A Kinetic Model to Predict the Compositions of Metal, Slag and Inclusions during Ladle Refining: Part 1. Basic Concept and Application

机译：钢包精炼过程中预测金属，炉渣和夹杂物组成的动力学模型：第1部分。基本概念和应用

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摘要

A kinetic model to predict chemical composition changes in molten steel, slag, and inclusions in ladle refining was developed and used to elucidate the mechanism underlying the change in the chemical composition of the inclusions. The coupled reaction model was applied to estimate the reaction between molten steel/slag and molten steel/inclusion originating from the slag. The thermodynamic calculation software, FactSage6.3, was employed to obtain the activity of each component in the slag phase. Empirical equations were applied to the reaction between the slag and the refractory. The resulting model can calculate changes in (1) the composition of each element in the molten steel, slag, and the inclusion originating from the slag, (2) the amount of inclusion originating from the slag and the deoxidation products, and (3) the ratio of the inclusion originating from the slag and the deoxidation products to the total inclusion. The calculated results were found to agree with the operational results of a 165 t ladle refining process reported in the literature. The deoxidation products altered from alumina to a MgO·Al_2O_3 spinel-type inclusion due to an increase in the Mg content of steel. In the average composition changes of each element in the total inclusions, calculated results for the MgO and AI2O3 contents were also found to agree with the operational results.
机译：建立了预测钢包精炼过程中钢水，炉渣和夹杂物化学成分变化的动力学模型，并将其用于阐明夹杂物化学成分变化的机理。应用耦合反应模型来估计钢水/炉渣与源自钢渣的钢水/夹杂物之间的反应。使用热力学计算软件FactSage6.3来获取炉渣相中每种组分的活性。将经验方程式应用于炉渣与耐火材料之间的反应。生成的模型可以计算出以下方面的变化：（1）钢水，炉渣中的每个元素的成分以及源自炉渣的夹杂物；（2）源自炉渣和脱氧产物的夹杂物的量；以及（3）源自炉渣和脱氧产物的夹杂物与总夹杂物的比率。发现计算结果与文献报道的165 t钢包精炼过程的操作结果相符。由于钢中Mg含量的增加，脱氧产物由氧化铝变为MgO·Al_2O_3尖晶石型夹杂物。在总夹杂物中各元素的平均组成变化中，MgO和AI2O3含量的计算结果也与操作结果相符。

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  • 来源
    《ISIJ international》 |2013年第12期|2110-2117|共8页
  • 作者

    Akifumi HARADA; Nobuhiro MARUOKA; Hiroyuki SHIBATA; Shin-ya KITAMURA;

  • 作者单位

    Department of Metallurgy, Graduate School of Engineering, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577 Japan;

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577 Japan;

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577 Japan;

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577 Japan;

  • 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

    ladle metallurgy; kinetic simulation; inclusion; spinel; composition change;

    机译：钢包冶金动力学模拟包含尖晶石成分变化;

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