东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2004, Vol. 25 ›› Issue (4): 378-381.DOI: -

• 论著 • 上一篇    下一篇

添加稀土硝酸盐氟碳铈矿的热分解行为

吴文远;陈杰;孙树臣;涂赣峰   

  1. 东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院 辽宁沈阳　110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2004-04-15 发布日期:2013-06-24
  • 通讯作者: Wu, W.-Y.
  • 作者简介:-
  • 基金资助:
    教育部骨干教师基金资助项目·

Behavior of thermal decomposition of bastnaesite with rare earth nitrate added to it

Wu, Wen-Yuan (1); Chen, Jie (1); Sun, Shu-Chen (1); Tu, Gan-Feng (1)   

  1. (1) Sch. of Mat. and Metall., Northeastern Univ., Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2004-04-15 Published:2013-06-24
  • Contact: Wu, W.-Y.
  • About author:-
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摘要： 为了寻求较低温度下分解氟碳铈矿的方法,用TG DTA热分析技术研究了添加稀土硝酸盐(质量分数为5%)后氟碳铈矿的热分解过程,并用XRD方法分别对430℃和510℃下焙烧产物进行了物相分析·研究结果表明:430℃下不添加稀土硝酸盐时,氟碳铈矿只是部分分解,加入稀土硝酸盐后可以完全分解,分解产物主要是REOF,2CeO2·CeF3和少量的4CeO2·Ce2O3;510℃下氟碳铈矿完全分解,加入稀土硝酸盐无明显作用·

关键词: 稀土, 氟碳铈矿, 焙烧, 分解行为, 稀土硝酸盐

Abstract: To seek the way to enable bastnaesite to be decomposed at lower temperature, process of thermal decomposition of bastnaesite to which 5% (mass fraction) of rare earth nitrate had been added was developed by TG-DTA, and the phase compositions of different calcined products were investigated by XRD at 430°C and 510°C separately. The results showed that bastnaesite is decomposed partly with no oxidant added to it at 430°C, while it can be decomposed completely with 5% (mass fraction) of the oxidant added to it. The products decomposed are mainly REOF and 2CeO2·CeF3 accompanied with a bit of 4CeO2·Ce2OK3. On the other hand, bastnaesite can be completely decomposed of 510°C on which no apparent effect can be found when adding the oxidant to it.

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