大量NH_4Cl存在的水盐体系中测定LiCl含量的分析方法研究

Measurement Method for LiCl in Salt Water Systems with NH4Cl Coexisting

中文关键词:  水盐体系  烘渣法  氯化锂  氯化铵

英文关键词:Electrolyte solution  Drying  Ammonium chloride  Lithium chloride

中文摘要:

      根据NH4Cl、LiCl的化学特性,选用烘渣法分析大量NH4Cl存在的水盐体系中LiCl的含量。t≤450℃时,LiCl在烘渣过程中不会发生转变,烘渣得到的LiCl净重与加入时相等。通过调整烘渣温度、烘渣时间、冷却时间等操作条件,得到了最佳的烘渣条件。在此条件下,NH4Cl分解完全,保证了LiCl分析结果的相对误差不超过0.08%。进一步探讨了高NH4Cl与LiCl质量比及低LiCl含量时此方法的适用性。实验结果表明,分析结果相对误差不超过0.1%。

英文摘要:

      According to the chemistry characteristic of ammonium chloride and lithium chloride, the authors choose the method of drying to analyze the content of LiCl with NH4Cl coexisting.By choosing the optimal conditions,including the drying temperature,the drying time,the cooling time,the analytical error can be within 0.3%.Moreover,the authors determine the content of LiCl on the condition of existing more NH4Cl and less LiCl in the mixture solution by this method,a good result can also be obtained with analytica...