Solubility Prediction for the Reciprocal Quaternary System (Li+, Mg2+//cr,SO42--H2O) at 273.15 K Using Pitzer Ion-interaction Model

摘要：

　　Solubilities of the reciprocal quaternary system (Li+,Mg2+//Ci-,SO42--H2O) at 273.15K were calculated using Pitzer and its extended HW model.The values of the Pitzer single-salt parameters β(0),β(1),β(2) and C(Ψ) for LiCl,MgCl2,Li2SO4,and MgSO4,the mixed ion-interaction parameters θLi、Mg,θCl、SO4,ΨLi、Mg、Cl,ΨLi,Mg、SO4,ΨLi、Cl、SO4 and ΨMg、Cl、SO4,and the Debye-Hückel parameter A(4) in the system at 273.15K were derived either temperature-dependent equation or through fitting solubility data of the ternary system by multiple linear regression method.Based on the J(a)necke indexes,the phase diagram was plotted.This study affords the necessary parameters for solubility predictions of complicated systems and establishes a theoretical basis for the separation of these valuable minerals from salt lake brine.

关键词： theoretical calculation predictive solubility Pitzer ion-interaction model salt lake brine

作者: Shiqiang Wang Yafei Guo Tianlong Deng

作者单位: Tianjin Key Laboratory of Marine Resources and Chemistry, College of Marine Science and Engineering, Tianjin Key Laboratory of Marine Resources and Chemistry, College of Marine Science and Engineering,

会议类型: 国际会议

会议名称: 2012 2nd International Symposium on Chemical Engineering and Material Properties(ISCEMP2012)(2012第二届化学工程与材料特性国际研讨会)

会议地点: 太原

会议语种:英文

页码: 437-440

在线出版日期: 2012-06-23（万方平台首次上网日期，不代表论文的发表时间）