察尔汗盐湖卤水模拟蒸发计算

Simulated Evaporation Calculation of Brine in Qarhan Salt Lake

研究了青海察尔汗盐湖不同K^+含量模拟卤水的理论蒸发过程,以25℃Na^+,K^+,Mg2+//Cl^--H_2O相图为依据,通过物料衡算,计算出各个析盐阶段和蒸发过程的析盐量、蒸发水量、成卤率。通过非线性拟合,获得单位含钾矿物和蒸发水量的关系式,为优化盐田工艺提供了理论基础,便于精控盐田。

Evaporation processes of simulated brine with different content of K ＋were studied. With the theoretical phase diagram of Na＋ , K＋, Mg2＋/Cl- - H2 0 system at 25 ℃, amount of salting, water and halogen rate in the each stage of brine evaporation processes were calculated through the material bal- ance. Through nonlinear fitting, the relation between the evaporation of water and unit potassium mineral were obtained, which provided thoretical basis for optimizing the process parameters and controlling evapo- ration technique.