Hi'/> Effect of graphite content and heating temperature on carbon pick-up of ultra-low-carbon steel from magnesia-carbon refractory using CFD modelling
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首页> 外文期刊>International Journal of Heat and Mass Transfer >Effect of graphite content and heating temperature on carbon pick-up of ultra-low-carbon steel from magnesia-carbon refractory using CFD modelling
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Effect of graphite content and heating temperature on carbon pick-up of ultra-low-carbon steel from magnesia-carbon refractory using CFD modelling

机译：碳含量和加热温度对超低碳钢镁碳耐火材料碳吸收的影响

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摘要

Highlights•First time to numerically study carbon pick-up of molten steel from refractory.•Carbon transfer induced by direct dissolution and chemical reaction are included.•Evolution of carbon content in molten steel and refractory was clarified.•Experiment was carried out to validate the mathematical model.AbstractIn order to study the effect of refractory graphite content and heating temperature on carbon pick-up of ultra-low-carbon steel from magnesia-carbon refractory, a transient axisymmetric mathematical model has been established. The momentum, heat and mass transfer between the refractory and the molten steel was modeled by using porous medium. Arrhenius law was employed to define the rate of the carbothermic reduction reaction of the magnesia. Besides, a series of experiments were carried out to verify the model. The results indicate that the carbon content of the molten steel rapidly rises when the refractory graphite content ranges from 3 mass% to 10 mass%, and the carbon pick-up induced by direct dissolution is significantly promoted. The influence of the heating temperature on the carbon content in the molten steel however is negligibly small, and the proportions of the carbon pick-up caused by the direct dissolution and the chemical reaction basically remain the same although the heating temperature increases by 100 K. The effect of the refractory graphite content on the carbon pick-up of the molten steel far outweighs that of the heating temperature.
机译： 突出显示 • 首次通过数值研究从耐火材料中吸收钢水的碳。 • 直接溶解和​​化学反应引起的碳转移 • 澄清了钢水和耐火材料中碳含量的演变。 • 进行了实验以验证数学模型。 摘要 < ce：simple-para id =“ sp0010” view =“ all”>为了研究耐火石墨含量和加热温度对瞬态轴对称镁碳质耐火材料中超低碳钢的碳吸收的影响数学模型已建立。使用多孔介质对耐火材料和钢水之间的动量，热量和质量传递进行了建模。阿雷尼乌斯定律被用来定义氧化镁碳热还原反应的速率。此外，进行了一系列实验以验证模型。结果表明，当耐火石墨含量在3〜10％（质量）范围内时，钢水的碳含量迅速上升，直接溶解引起的碳吸收显着促进。然而，加热温度对钢水中碳含量的影响很小，可以忽略不计，尽管加热温度升高100 K，但直接溶解和​​化学反应引起的碳吸收比例基本保持不变。耐火石墨含量对钢水碳吸收的影响远大于加热温度的影响。

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  • 作者

    Qiang Wang; Fengsheng Qi; Zhu He; Yawei Li; Guangqiang Li;

  • 作者单位

    The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology,Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology;

    School of Metallurgy, Northeastern University;

    The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology,Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology;

    The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology;

    The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology,Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology;

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

    Carbon pick-up; Porous medium; Magnesia-carbon refractory; Ultra-low-carbon steel; Numerical simulation;

    机译：碳吸收多孔介质镁碳质耐火材料超低碳钢数值模拟;

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