| 三元体系Li~+,Mg~(2+)∥SO_4~(2-)—H_2O 25℃相关系及溶液物化性质的研究 |
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| 引用本文： | 李冰,房春晖,王庆忠,李军,宋彭生.三元体系Li~+,Mg~(2+)∥SO_4~(2-)—H_2O 25℃相关系及溶液物化性质的研究[J].盐湖研究,1993(3). |
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| 作者姓名： | 李冰 房春晖 王庆忠 李军 宋彭生 |
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| 作者单位： | 中国科学院盐湖研究所，中国科学院盐湖研究所，中国科学院盐湖研究所，中国科学院盐湖研究所，中国科学院盐湖研究所 西宁 810008，西宁 810008，西宁 810008，西宁 810008，西宁 810008 |
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| 摘 要： | 研究了三元体系Li~+,Mg~(2+)∥SO_4~(2-)—H_2O在25℃时的相关系和平衡液相的密度、粘度、折光率、电导等物化性质,该体系为简单共饱型,两段溶解度曲线对应于体系的两种原始组份Li_2SO_4·H_2O和MgSO_4·7H_2O的结晶区,无复盐和固溶体形成,亦无脱水作用发生,应用电解质溶液Pitzer模型检测该体系25C的溶解度,并用经验或半经验公式对平衡液相的密度和折光率进行了理论计算,计算值与实验值非常接近。
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| 关 键 词： | 水盐体系 溶解度 相平衡 Pitzer模型 |
A Study on the Phase Diagram and Solution Properties of Ternary System Li~+, Mg~(2+)/SO_4~(2-)—H_2O at 25C |
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| Li Bing,Fang Chunhui,Wang Qingzhong. Li Jun and Song Pengsheng.A Study on the Phase Diagram and Solution Properties of Ternary System Li~+, Mg~(2+)/SO_4~(2-)—H_2O at 25C[J].Journal of Salt Lake Research,1993(3). |
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| Authors: | Li Bing Fang Chunhui Wang Qingzhong Li Jun and Song Pengsheng |
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| Abstract: | Solubilities of ternary system Li~+. Mg~(2+)/SO_4~(2-)—H_2O were investigated by isothermal method at 25 C. Physico-chemical properties of solutions, such as density, refractive index, viscosity and conductivity were determined. The system is a simple eutonic type. Phase diagram consists of two solubility branches and two crystallization fields corresponding to LiS and EpS. No double salt or solid solution was found in the system. Pitzer model of electrolyte solution was used to cheek the obtained solubilities. Two equations were used to correlate density and refractive index with the composition. Data comparison gives good agreement. Differences between measured and calculated values are less than 0.6％ for the former. 0.15％ for the later. |
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| Keywords: | Salt-water system Solubility Phase equilibrium Pitzer model |
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