青海大风山芒硝矿晶间卤水25℃等温蒸发实验

Study on 25℃ isothermal evaporation of Qinghai Dafengshan brine in Chaidamu Basin

本文进行了青海柴达木盆地大风山芒硝矿晶间卤水25 oC等温蒸发试验,结合Na+,K+,Mg2+//Cl-,SO42-25℃五元水盐体系(介稳)相图,研究了该卤水在等温蒸发过程中盐类矿物的结晶路线和析出顺序,采用X射线衍射手段进行了析出矿物的物相分析,为该卤水的开发和综合利用提供了基础数据。

Test of the 25℃ isothermal evaporation of Qinghai Dafengshan intercrystalline brine in Chaidamu basin was conducted. The crystallization paths and the precipitation regularities of salts in the process of isothermal evaporation were determined through XRD and chemical analysis, the evaporation of the saltwater system could be theoretically described by solubility phase diagramof （Na^＋,K^＋,Mg^2＋）,（Cl^-,SO4^2- ）,H2O pentanary system at 25℃. The experiment and study provided important basic data for the utilization and exploration of Dafengshan brine.