西藏鄂雅错盐湖卤水25℃等温蒸发研究  

Research of 25 ℃ Isothermal Evaporation of Brine in Eyacuo Salt Lake in Tibet

作　　者：王祝[1,2] 李明礼[1,2,3] 邵蓓[1,2] 邬国栋[1,2] 

机构地区：[1]西藏自治区地质矿产勘查开发局中心实验室,西藏拉萨850033 [2]国土资源部拉萨矿产资源监督检测中心,西藏拉萨850033 [3]成都理工大学地球科学学院,四川成都610059

出　　处：《盐业与化工》2013年第12期13-16,20,共5页Jounral of Salt and Chemical Industry

摘　　要：以西藏鄂雅错湖表卤水为研究对象,依据Na+、K+、Mg2+∥SO2-4、Cl--H2O五元水盐体系25℃介稳相图,研究了卤水在25℃等温蒸发过程中的盐类结晶路线及其析出规律。实验结果表明:卤水蒸发析盐顺序依次为氯化钠、钾石盐、光卤石、泻利盐、水氯镁石和锂盐,硼酸盐在蒸发过程中不以固体形式析出,赋存于老卤中,实验结果与介稳相图基本吻合,研究结果可为盐湖的综合利用提供参考。Abstract： This paper which took the surface brines of Eyacuo Salt Lake as its research object studied the crystallization paths and precipitation regular patterns of salts in the process of 25 ℃ - isothermal evaporation of brines by referring to the metastable phase diagram of Na＋ , K＋ , Mg2＋ // SO4 2- ,Cl4 - - H2O quinary system at 25 ℃. It was found that the crystallized path of the salt lake brine was that： halite, sylvite, carnallite, epsom salt, bischofite and lithium salt while borate was not crystallized out but concentrated in the mother solution. It showed that the 25 ℃ - isothermal e- vaporated crystallization path agreed well with the theoretical crystallized path based on the metasta- ble phase diagrams. The experiment and study provide the reference for the comprehensive utiliza- tion of hines of Eyaeuo Salt Lake.

关 键 词：鄂雅错 盐湖 卤水 25℃等温蒸发 

分 类 号：TS39[轻工技术与工程]