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介绍了描述25℃Li+,Na+,K+,Mg2+/Cl-,SO42--H2O体系的热力学Pitzer模型.给出了为获得Pitzer混合参数而测定的Li+/Cl-,SO42--H2O,Li+,K+/Cl--H2O,Li+,Na+/Cl--H2O等三元体系和Li+,Mg2+/Cl-,SO42--H2O四离子体系溶液的渗透系数.详细叙述如何利用热力学数据和溶解度数据,获得Li+,Mg2+/Cl-,SO42--H2O,Li+,K+/Cl-,SO42--H2O,Li+,Na+/Cl-,SO42--H2O体系全部混合参数及7种锂盐Gibbs标准生成自由能.进而通过数据对比,介绍了本模型在含Li+多组分溶液25℃热力学性质计算、含Li+多组分体系25℃溶解相平衡预测等方面的应用.
The thermodynamic Pitzer model describing the Li +, Na +, K +, Mg2 + / Cl- and SO42 - H2O systems at 25 ℃ is presented.The Li + / Cl-, SO42 - H2O, Li +, K + / Cl - H2O, Li +, Na + / Cl - H2O and Li +, Mg2 + / Cl- and SO42 - H2O, , Mg2 + / Cl-, SO42 - H2O, Li +, K + / Cl-, SO42 - H2O, Li +, Na + / Cl-, SO42 - H2O system and Gibbs standard of seven lithium salts. Based on the data comparison, the application of this model in the calculation of thermodynamic properties at 25 ℃ with Li + multi-component solution and the equilibrium prediction of dissolved phase containing Li + multi-component system at 25 ℃ is introduced.