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(1a)]=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=2.7107eEa/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.
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 ln[ln(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.
出处
《过程工程学报》
CAS
CSCD
北大核心
2003年第3期278-282,共5页
The Chinese Journal of Process Engineering
基金
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)
