| 固氟氯化法从山东微山氟碳铈矿提取稀土的氯化率动力学 |
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| 引用本文： | 时文中,朱国才.固氟氯化法从山东微山氟碳铈矿提取稀土的氯化率动力学[J].过程工程学报,2003,3(3):278-282. |
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| 作者姓名： | 时文中 朱国才 |
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| 作者单位： | 1. 清华大学核能技术设计研究院,北京102201;驻马店师范高等专科学校化学系,河南,驻马店,463000
2. 清华大学核能技术设计研究院,北京102201 |
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| 基金项目： | 国家自然科学基金资助项目(编号: 59804004)，国家杰出青年科学基金资助项目(编号: 59725408) |
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| 摘 要： | 研究了用固氟氯化铵焙烧法分解山东微山中品位氟碳铈精矿回收稀土的氯化率动力学. 结果表明：固氟焙砂的氯化反应动力学过程是区域反应速率模型，氯化反应过程经过了2个串联反应步骤，用Erofeev方程ln–ln(1–a)]=lnk+nlnt处理反应速率，反应速率常数与温度T的函数关系式为k=2.7?107e–Ea/RT, 表观活化能Ea为125.9 kJ/mol，过程限制环节主要是界面化学反应控制.
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| 关 键 词： | 氟碳铈精矿 固氟 氯化铵焙烧法 稀土 动力学 |
| 文章编号： | 1009-606X(2003)03-0278-05 |
| 修稿时间： | 2002年11月25 |
Kinetics on Chlorinating Rare Earth of Weishan Mid-grade Bastnasite in Shandong after Fixed Fluorine Treatment |
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| SHI Wen-zhong,ZHU Guo-cai.Kinetics on Chlorinating Rare Earth of Weishan Mid-grade Bastnasite in Shandong after Fixed Fluorine Treatment[J].Chinese Journal of Process Engineering,2003,3(3):278-282. |
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| Authors: | SHI Wen-zhong ZHU Guo-cai |
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| Affiliation: | SHI Wen-zhong1,2,ZHU Guo-cai1 |
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| Abstract: | The kinetics curved lines of chlorinating rate on chlorinating rare earth of Weishan mid-grade bastnasite in Shandong after fixed fluorine were determined. It is shown that the chlorinating process for fluorine-fixed calcine agreed well with the regional reaction rate model presented by Bagdasarym. The process consisted of two tandem steps, Erofeev Equation lnln(1a)]=lnk+nlnt was used to deal with the equation of reaction rate,the function between rate constant and temperature was k=2.7?07e125900/RT. The apparent activation energy Ea was 125.9 kJ/mol. The process was mainly controlled by the interfacial chemical reaction. |
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| Keywords: | bastnasite fluorine-fixed ammonium chloride rare earth kinetics |
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