耐火材料 ›› 2023, Vol. 57 ›› Issue (1): 41-44.DOI: 10.3969/j.issn.1001-1935.2023.01.009

• 研究开发 • 上一篇    下一篇

添加Y2O3对CaO-MgO-SiO2体系中CMS的影响

任隆宇, 崔妍, 曲殿利, 徐茹慧   

  1. 辽宁科技大学 材料与冶金学院 辽宁鞍山 114051
  • 收稿日期:2022-04-08 出版日期:2023-02-15 发布日期:2023-02-21
  • 作者简介:任隆宇:女,2001年生,本科生。E-mail:2069521947@qq.com
  • 基金资助:
    辽宁科技大学大学生创新创业训练计划项目(202210146006)。

Effect of Y2O3 addition on CMS in CaO-MgO-SiO2 system

Ren Longyu, Cui Yan, Qu Dianli, Xu Ruhui   

  1. School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan 114051,Liaoning,China
  • Received:2022-04-08 Online:2023-02-15 Published:2023-02-21

摘要: 为了提高镁质耐火材料的高温性能,以分析纯化学试剂MgO、CaO、SiO2、Y2O3等为主要原料,研究了添加Y2O3对CaO-MgO-SiO2体系中钙镁橄榄石(CMS)的生成和转化的影响,以及转化生成物Ca4Y6O(SiO4)6的耐火度。结果表明:1)Y2O3的添加不仅能够显著减少CaO-MgO-SiO2体系中低熔点相CMS的生成量,而且能够从CMS中捕获CaO和SiO2使CMS转化为高熔点相Ca4Y6O(SiO4)6、MgO和Y2Si2O7,有利于提高镁质材料的高温性能。2)Ca4Y6O(SiO4)6的耐火度>1 800 ℃。

关键词: Y2O3, 镁质耐火材料, CaO-MgO-SiO2体系, 低熔点相, 钙镁橄榄石

Abstract: In order to improve the high temperature performance of magnesia refractories,the effects of the Y2O3 addition on the formation and the transformation of (monticellite CMS) in CaO-MgO-SiO2 system were researched using analytically pure chemical reagents MgO,CaO,SiO2 and Y2O3 as main raw materials,and the refractoriness of the forming product Ca4Y6O(SiO4)6 was studied.The results show that:(1)the addition of Y2O3 can not only significantly reduce the production of low melting point phase CMS in the MgO-CaO-SiO2 system,but also capture CaO and SiO2 to convert CMS into high-melting point phases Ca4Y6O(SiO4)6,MgO and Y2Si2O7,which is beneficial to improving the high temperature performance of magnesia materials;(2)and the refractoriness of Ca4Y6O(SiO4)6 is higher than 1 800 ℃.

Key words: Y2O3, magnesia refractories, CaO-MgO-SiO2 system, low melting point phase, monticellite

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