论文部分内容阅读
将Ritrer离子作用模型的应用扩展到中国富含锂的一里平盐湖卤水Li－Na-K-Mg－Cl-SO4－H2O体系，综合1990－1997年作者对该体系的含锂三元次级体系25℃时的活度系数和渗透系数的研究结果和文献数据，给出了该体系的Pitzer离子作用模型参数；计算了溶解平衡常数；预测了青海一里平盐湖晶间卤水中离子和盐的活度系数、卤水的渗透系数、水活度、蒸汽压以及盐类的饱和度；揭示了卤水在蒸发和稀释过程中上述热力学性质随离子强度变化的规律，用离子强度与盐类饱和度的关联图（I-ln（K’／K）图）分析了该卤水的折盐顺序。计算结果表明，一旦平盐湖晶间因水在25℃时只有石盐饱和，与野外观测结果相一致；用参数化的Pitzer离子作用模型预测该卤水多组分体系的热力学性质和溶解平衡是可行的。
This paper extends the application of the Ritrer ion model to the Li-Na-K-Mg-Cl-SO4-H2O brine system in a lithium-rich Pinghu Salt Lake in China. Based on the data from 1990 to 1997, The results of the activity coefficient and permeability coefficient at 25 ℃ and literature data show the parameters of Pitzer ion action model. The equilibrium constants of dissolution are calculated. The ions and salts of brine The activity coefficient, the brine permeability coefficient, the water activity, the steam pressure and the salt saturation. The regularity that the above thermodynamic properties change with the ionic strength during evaporation and dilution of the brine is revealed. The relationship between ionic strength and salt saturation (I-ln (K ’/ K) plot). The calculated results show that once the salt water in the flat salt lake is saturated at 25 ℃, it is in agreement with the field observations; it is feasible to predict the thermodynamic properties and the solubility balance of the brine multicomponent system with the parameterized Pitzer ion action model of.