| 添加稀土硝酸盐氟碳铈矿的热分解行为 |
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| 引用本文： | 吴文远,陈杰,孙树臣,涂赣峰.添加稀土硝酸盐氟碳铈矿的热分解行为[J].东北大学学报(自然科学版),2004,25(4):378-381. |
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| 作者姓名： | 吴文远 陈杰 孙树臣 涂赣峰 |
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| 作者单位： | 东北大学材料与冶金学院,辽宁沈阳,110004;东北大学材料与冶金学院,辽宁沈阳,110004;东北大学材料与冶金学院,辽宁沈阳,110004;东北大学材料与冶金学院,辽宁沈阳,110004 |
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| 基金项目： | 教育部高校骨干教师资助计划 |
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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·
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| 关 键 词： | 稀土 氟碳铈矿 焙烧 分解行为 稀土硝酸盐 |
| 文章编号： | 1005-3026(2004)04-0378-04 |
| 修稿时间： | 2003年10月17 |
Behavior of Thermal Decomposition of Bastnaesite with Rare Earth Nitrate Added to It |
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| WU Wen-yuan,CHEN Jie,SUN Shu-chen,TU Gan-feng.Behavior of Thermal Decomposition of Bastnaesite with Rare Earth Nitrate Added to It[J].Journal of Northeastern University(Natural Science),2004,25(4):378-381. |
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| Authors: | WU Wen-yuan CHEN Jie SUN Shu-chen TU Gan-feng |
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| Institution: | (1) Sch. of Mat. and Metall., Northeastern Univ., Shenyang 110004, China |
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| 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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| Keywords: | rare earth bastnaesite roast decomposition behavior rare earth nitrate |
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