东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2012, Vol. 33 ›› Issue (8): 1158-1161.DOI: -

• 论著 • 上一篇    下一篇

中等氧分压下CaO-SiO_2-Al_2O_3-FeO_x体系的液相线及平衡相关系

王楠;刘敏;陈帅超;陈敏;   

  1. 东北大学材料与冶金学院;鞍钢股份有限公司炼钢总厂;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50974034,51074039)

Liquidus and phase equilibria in CaO-SiO2-Al2O3-FeOx system at intermediate oxygen partial pressure

Wang, Nan (1); Liu, Min (2); Chen, Shuai-Chao (1); Chen, Min (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China; (2) General Steelmaking Plant, Angang Steel Company Limited, Anshan 114000, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Wang, N.
  • About author:-
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摘要： 采用高温平衡实验方法研究了10.13 Pa氧分压下,温度对CaO-Al2O3-FeOx及SiO2-Al2O3-FeOx两三元系液相线及平衡相关系的影响.平衡试样的EPMA(电子探针显微分析)、SEM(扫描电镜)检测结果表明,对CaO-Al2O3-FeOx体系而言,随着温度由1 450℃升至1 550℃,液相区向高Al2O3区域扩展,且两个温度条件下其高Al2O3区域的平衡相关系均包括两相平衡共存以及三相平衡共存.另一方面,对于SiO2-Al2O3-FeOx体系,其液相区随温度升高向高铁区及莫来石初晶区扩展,同时该体系1 450℃下靠近SiO2-FeOx侧的平衡相关系与1 550℃下不同.此外,...

关键词: CaO-Al2O3-FeOx体系, SiO2-Al2O3-FeOx体系, 液相线, 平衡相关系, 中等氧分压

Abstract: A high temperature equilibrium experiment was carried out to investigate the effects of temperature on the liquidus lines and equilibrium phase relations of the CaO-Al2O3-FeOx and the SiO2-Al2O3-FeOx ternaries at intermediate oxygen partial pressure of 10.13 Pa. The results of electron probe microanalysis (EPMA) and scanning electron microscope (SEM) showed that the liquidus region of CaO-Al2O3-FeOx system extended to the high Al2O3 region with the temperature increasing from 1450 to 1550°C, and the equilibrated coexisting phases with two-phase and three-phase coexistence were found in the high Al2O3-containing region for the two temperatures. While for the SiO2-Al2O3-FeOx system, the liquidus area expanded to the high iron oxide as well as to the primary region of mullite with the temperature increasing, and the equilibrium phase relations at 1450°C were different from those at 1550°C. In addition, the present experimental results agree well with the FactSage predictions.

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