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Estimation for Iron Redox Equilibria in Multicomponent Slags

机译：多组分渣中铁氧化还原平衡的估算

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摘要

The knowledge of redox equilibria of iron in multicomponent molten slags is of significant importance to understand the viscosity, electrical conductivity and structure of iron-containing slags. However, the available data of molar ratio of ferric ion to ferrous ion are limited due to the difficulty of experiment and heavy workload. In this study, a model was established to estimate the X_(FeO_2~-) /X_(Fe~(2+) (normally, most of ferric ions exist in the form of complex anions such as FeO_2~-) ratio in CaO-MgO-Al_2O_3-SiO_2-"FeO_L" slags, which can give good estimation results compared to the experimental measured values. From the model, by increasing oxygen partial pressure or decreasing temperature, the X_(Feo_2~-) /X_(Fe~(2+)) ratio will increase. Different components have different influences on X_(Feo_2~-) /X_(Fe~(2+)) ratio: CaO and MgO are beneficial for the increase of this ratio, but Al_2O_3 and SiO_2 have reverse effects.
机译：了解多组分熔渣中铁的氧化还原平衡对于了解含铁渣的粘度，电导率和结构非常重要。然而，由于实验困难和工作量大，铁离子与亚铁离子摩尔比的可用数据有限。在这项研究中，建立了一个模型来估计CaO-中X_（FeO_2〜-）/ X_（Fe〜（2+）（通常，大多数三价铁离子以诸如FeO_2〜-等络合阴离子的形式存在）的比率进行估算。 MgO-Al_2O_3-SiO_2-“ FeO_L”炉渣与实验测量值相比可提供良好的估算结果。从模型中，通过增加氧分压或降低温度，X_（Feo_2〜-）/ X_（Fe〜（ 2+））的比例会增加，不同的成分对X_（Feo_2〜-）/ X_（Fe〜（2+））的比例会有不同的影响：CaO和MgO有利于该比例的增加，而Al_2O_3和SiO_2则相反效果。

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  • 来源
    《High temperature materials and processes》 |2017年第6期|567-571|共5页
  • 作者

    Jun-Hao Liu; Guo-Hua Zhang; Kuo-Chih Chou;

  • 作者单位

    State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing,Beijing 100083, China;

    State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing,Beijing 100083, China;

    State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing,Beijing 100083, China;

  • 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);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    X_(FeO_2~-) / X_(Fe~(2+) ratio; multicomponent slags; model;

    机译：X_（FeO_2〜-）/ X_（Fe〜（2+）比率;多渣;模型;

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