KCl-K_2B_4O_7-H_2O三元体系298K介稳相平衡研究  

Study on the Metastable Phase Equilibrium of the Ternary System KCl-K_2B_4O_7-H_2O at 298K

作　　者：闫书诚[1] 殷辉安[2] 梁渠[2] 闫书一[2] 曾英[2] 

机构地区：[1]四川大学化学学院,成都610064 [2]成都理工大学材料与化学化工学院,成都610059

出　　处：《盐业与化工》2009年第2期34-36,共3页Jounral of Salt and Chemical Industry

基　　金：国家自然科学基金资助项目(49773200;40673050)

摘　　要：文章报道西藏扎布耶盐湖卤水三元子体系KCl-K2B4O7-H2O298 K介稳平衡实验数据,并绘制出介稳平衡相图。结果表明:该三元体系属简单共饱型,无复盐或固溶体形成;介稳平衡相图中单变度曲线(AE和BE)对应的介稳平衡固相分别为:K2B4O7.4H2O和KCl。与该体系对应的稳定相图比较:氯化钾、硼酸钾与平衡相图中结晶形式一致。Abstract： This paper reports the experimental data of metastable phase equilibrium of the ternary system KCl-K2B4O7-H2O298 K for Zhabuye salt lake in Tibet from which the metastable phase diagram was plotted. The results indicate that this ternary system is a simple - eutectic - type one, no double salt or solid solution was found. Two metastable solubility curves （AE, BE ）of the system correspond to the two crystallization fields of K2B4O7·4H2O and KCl. It is found that the crystallization speciations of K2B4O7·4H2O and KCl in the metastable equilibrium is the same as that in the stable equilibrium one.

关 键 词：三元体系KCl-K2B4O7-H2O 介稳相平衡 扎布耶盐湖 

分 类 号：TQ131.1[化学工程—无机化工]