三元体系MgCl_2-SrCl_2-H_2O 323K及348K相平衡  

Phase equilibria in the ternary system MgCl_2-SrCl_2-H_2O at 323 K and 348 K

作　　者：李大伟[1,2] 桑世华[1,2] 崔瑞芝[1,2] 魏翠[1,2] 王攀[1,2] 

机构地区：[1]成都理工大学材料与化学化工学院,成都610059 [2]矿产资源化学四川省高校重点实验室,成都610059

出　　处：《四川大学学报（自然科学版）》2015年第3期638-644,共7页Journal of Sichuan University(Natural Science Edition)

基　　金：国家自然科学基金(41373062);高等学校博士学科点专项科研基金(20125122110015)

摘　　要：采用等温溶解平衡法研究了323K及348K时三元体系MgCl2-SrCl2-H2O的相平衡关系.根据实验数据,绘制了相应的三元体系相图,并确定了该体系共饱点的液相组成及对应的平衡固相.该三元体系在323K及348K条件下均属于简单共饱型,无复盐及固溶体生成,相图均由一个共饱点,两条单变量曲线和两个结晶区构成,平衡固相均为MgCl2·6H2O和SrCl2·2H2O.并对该三元体系在323K和348K时的相平衡进行了比较和讨论.Phase equilibria in the ternary system MgCI2-SrCl2-H2O at 323 K and 348 K were studied by i- sothermal solution saturation method. Using the experimental data, the phase diagrams of ternary sys- tem at 323 K and 348 K were obtained, respectively. The solubilities of salts and the corresponding e- quilibrium solid phases of the ternary system were determined. The phase diagrams of the ternary sys- tem at both 323 K and 348 K belong to a simple type, and are without complex salt and solid solution. It can be found that in all cases there are one eutectic point, two univariant curves and two regions of crys- tallization corresponding to MgC12 · 6H2 O and SrC12 · 2H2 O. The phase equilibria in this ternary sys- tem at 323 K and 348 K are compared and discussed.

关 键 词：地下卤水 相平衡 溶解度 氯化锶 氯化镁 

分 类 号：P619.21[天文地球—矿床学]