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首页> 外文期刊>ISIJ international >Effect of Al_2O_3 Addition on the Phase Equilibria Relations of CaO-SiO_2-5 wt%MgO-Al2_O_3-TiO_2 System Relevant to Ti-bearing Blast Furnace Slag
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Effect of Al_2O_3 Addition on the Phase Equilibria Relations of CaO-SiO_2-5 wt%MgO-Al2_O_3-TiO_2 System Relevant to Ti-bearing Blast Furnace Slag

机译：AL_2O_3添加对与Ti-轴承高炉炉渣相关的Ca-SiO_2-5 WT％MgO-Al2_3-TiO_2系统相平关系的影响

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摘要

The influence of Al_2O_3 addition up to 30 wt% on equilibria phase relations of Ti-bearing slag system with w(CaO)/w(SiO_2) of 1.00 was investigated at 1 300C and 1 400C by classical high temperature thermodynamic equilibria technique followed by XRD (X-Ray diffraction) and SEM-EDX (Scanning Electron Microscope and Energy Dispersive X-ray Fluorescence scope) analysis. Experimental results indicated that with the increase of Al_2O_3 addition the equilibria solid phases gradually change from melilite solid solution and perovskite to Al-Ti diopside solid solution, spinel, and pseudobrookite solid solution. Moreover, comparisons with the predictions by Factsage 7.2 revealed that the calculated equilibria phase relations were only well agreed with experimental results below 20 wt% Al_2O_3 and TiO_2, while great deviations presented when Al_2O_3 content higher than 20 wt%. Based on experimental and calculated results, the 1 300C and 1 400C liquidus lines as well as the predicted primary crystal phase boundary lines were constructed for specific composition range of CaO-SiO_2-5wt%MgO-Al_2O_3-TiO_2 system.
机译：通过经典的高温热力学平衡技术，研究了Al_2O_3添加了高达30wt％的Ti轴承渣系统的平衡阶段关系，其具有1.00和1 400℃，然后进行XRD进行XRD （X射线衍射）和SEM-EDX（扫描电子显微镜和能量分散X射线荧光范围）分析。实验结果表明，随着AL_2O_3的增加，均匀固体相逐渐从Melilite固体溶液和钙钛矿转变为Al-Ti偶联固溶体，尖晶石和假软铜矿固溶体。此外，与事实上的预测7.2的比较显示，计算的均衡相位关系均仅与低于20wt％AL_2O_3和TiO_2的实验结果很好，而当AL_2O_3含量高于20wt％时呈现出大的偏差。基于实验和计算的结果，为CaO-SiO_2-5wt％MgO-Al_2O_3-TiO_2系统的特定组成范围构建了1 300℃和1 400℃的液相线以及预测的初级晶相线路。

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  • 来源
    《ISIJ international》 |2019年第7期|1184-1191|共8页
  • 作者

    Lifeng SUN; Junjie SHI;

  • 作者单位

    Key Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education) Wenhua Road Heping District Shenyang Liaoning Province 110819 China School of Metallurgy Northeastern University Wenhua Road Heping District Shenyang Liaoning Province 110819 China;

    Key Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education) Wenhua Road Heping District Shenyang Liaoning Province 110819 China School of Metallurgy Northeastern University Wenhua Road Heping District Shenyang Liaoning Province 110819 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    phase diagram; equilibrium; Ti-bearing slag; Factsage; liquidus; Al_2O_3 addition;

    机译：相图;平衡;轴承渣;factsage;液体;AL_2O_3添加;

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