论文部分内容阅读
采用等温平衡的方法测定了KCl-RbCl-H2O和KCl-CsCl-H2O三元体系50℃的等温平衡溶解度,绘制了这两个体系的相图。研究表明,KCl-RbCl-H2O为固溶体型相图,没有共饱和点,只有一个(K,Rb)Cl固相区,饱和溶液线为一单变量曲线。平衡液相中RbCl/KCl与RbCl的百分含量呈正相关和线性关系,而固相中RbCl/KCl的变化则呈非线性关系。KCl-CsCl-H2O体系属于简单共饱和体系,存在一个共饱和点,在KCl、CsCl、H2O含量分别为5.1%、64.3%、30.6%时达到共饱和。实验对完善含铷、铯卤水体系的热力学数据和富钾卤水综合开发利用具有实际意义。
The isothermal equilibrium solubility of KCl-RbCl-H2O and KCl-CsCl-H2O ternary system at 50 ℃ was determined by isothermal equilibrium method. The phase diagrams of the two systems were plotted. The results show that KCl-RbCl-H2O is a solid solution phase diagram, there is no common saturation point, only one (K, Rb) Cl solid phase region and the saturated solution line is a univariate curve. The equilibrium liquid phase RbCl / KCl and RbCl percentage content was a positive correlation and a linear relationship, while the solid phase RbCl / KCl changes were non-linear relationship. The system of KCl-CsCl-H2O belongs to the simple total-saturated system and has a total saturated point. When the content of KCl, CsCl and H2O are 5.1%, 64.3% and 30.6%, respectively, they reach the total saturation. The experiment has practical significance to perfect thermodynamic data of rubidium-containing and cesium-brine system and comprehensive development and utilization of potassium-rich brine.