Simulation and Prediction of Solubility for the Quaternary System Containing Lithium, Sodium, Magnesium and Chloride at 273.15 K

2016 ◽  
Vol 873 ◽  
pp. 63-67
Author(s):  
Xing Yu Jiang ◽  
Lin Wang ◽  
Dong Chan Li
Keyword(s):  
Phase Diagram ◽  
Theoretical Basis ◽  
Quaternary System ◽  
Salt Lake ◽  
Interaction Model ◽  
Interaction Parameters ◽  
Solubility Predictions ◽  
Sodium Magnesium ◽  
Ion Interaction Model ◽  
Salt Lake Brine

Solubilities of the quaternary system containing lithium, sodium, magnesium and chloride at 273.15 K were calculated using Pitzer ion-interaction model and its extended HW model. The values of the Pitzer single-salt parameters β(0), β(1), β(2) and Cφ for LiCl, NaCl, and MgCl2, the mixed ion-interaction parameters θLi,Mg, θLi,Na, θNa,Mg, ψLi,Mg,Cl, ψLi,Na,Cl and ψNa,Mg,Cl, and the Debye–Hückel parameter Aφ in the quaternary system at 273.15K were derived. Based on the Jänecke 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.

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

2012 ◽  
Vol 549 ◽  
pp. 437-440 ◽  
Author(s):  
Shi Qiang Wang ◽  
Ya Fei Guo ◽  
Tian Long Deng
Keyword(s):  
Quaternary System ◽  
Salt Lake ◽  
Interaction Model ◽  
Linear Regression Method ◽  
Solubility Prediction ◽  
Temperature Dependent ◽  
Solubility Predictions ◽  
Multiple Linear Regression Method ◽  
Ion Interaction Model ◽  
Salt Lake Brine

Solubilities of the reciprocal quaternary system (Li+, Mg2+//Cl-, 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 Cφfor LiCl, MgCl2, Li2SO4, and MgSO4, the mixed ion-interaction parameters θLi,Mg, θCl,SO4, ψLi,Mg,Cl, ψLi,Mg,SO4, ψLi,Cl,SO4and ψMg,Cl,SO4, and the Debye–Hückel parameter Aφin 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 Jänecke 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.

Thermodynamic Study of the CuCl2-MCl2-H2O Systems (M = Mg, Co) at 298.15 K

1996 ◽  
Vol 61 (4) ◽  
pp. 507-511 ◽  
Author(s):  
Christomir Christov
Keyword(s):  
Thermodynamic Functions ◽  
Interaction Model ◽  
Thermodynamic Study ◽  
Interaction Parameters ◽  
Solubility Diagrams ◽  
Solubility Products ◽  
Ion Interaction Model ◽  
Good Agreement

The Pitzer ion-interaction model was used for a simulation of the CuCl2-MCl2-H2O (M = Mg, Co) systems at 298.15 K. The necessary thermodynamic functions (binary and ternary ion-interaction parameters and thermodynamic solubility products) were calculated and the theoretical solubility diagrams plotted. A very good agreement was obtained between the calculated and observed data.

scholarly journals The Influence of the MRSP on the Freezing and Evaporation Processes of the Magnesium Sulfate Subtype Salt Lake Brine

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Qinghai Li ◽  
Kongjin Zhu ◽  
Yuntao Liu ◽  
Xingqiang Liu ◽  
Feng Li ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Magnesium Sulfate ◽  
Mass Fraction ◽  
Crystal Morphology ◽  
Salt Lake ◽  
Metastable Phase ◽  
Potassium Ions ◽  
Evaporation Process ◽  
Metastable Phase Diagram ◽  
Salt Lake Brine

We have developed a new concept, which is the mass fraction ratio of sulfate and potassium ions (MRSP), for the magnesium sulfate subtype salt lake, which is calculated using the metastable phase diagram. We also studied the trend of the MRSP values with the temperature and the influence of the MRSP values on the evaporation process. The experimental results indicated that the MRSP value showed significantly negative trend with decrease of refrigerated temperature. Moreover, when the MRSP value of the objective brine is reduced to less than or equal to the Specific Value by freezing operation, the great changes of crystal morphology and stage of K+ and SO42- will take place, which makes the sequence of salts precipitation of the freezing-evaporation different from the direct-evaporation.

Thermodynamics and phase diagram of the salt lake brine system at 298.15 K

Calphad ◽  
2003 ◽  
Vol 27 (4) ◽  
pp. 343-352 ◽  
Author(s):  
Song Pengsheng ◽  
Yao Yan
Keyword(s):  
Phase Diagram ◽  
Salt Lake ◽  
Salt Lake Brine
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