摘要
用等温溶解平衡法研究了盐湖卤水体系Li+,Na+,K+,Mg2+/SO_4 ̄2-H2O25℃溶解度,获得了该五元体系25℃溶解度相图的十个无变量点和十个结晶区.十个结晶区分别对应于原始组份K2SO4、Li2SO4·H2O、MgSO4·7H2O、Na2SO4·10H2O、复盐3K2SO4·Na2SO4、Na2SO4·MgSO4·4H2O、Li2SO4·3Na2SO4·12H2O、2Li2SO4·Na2SO4·K2SO4·Li2SO4·K2SO4和K2SO4·MgSO4·6H2O,此外没有产生新的复盐或固溶体,用现代电解质溶液理论-Pitzer模型校验该体系的溶解度测定值,结果令人满意.
Solubilities of the quinary system Li+, Na+, K+. Mg2+ /SO_4 ̄2--H2O were investigated by isothermal method at 25℃. Phase diagram of the quinary system consists of 10 invariantpoints and 10 crystallization fields. 10 crystallization fields correspond to arcanite, lithiun sulphate monohydrate. epsomite, mirabilite. aphthitalite, bloedite, Dbl (3Na2SO4. Li2SO4·12H2O), Db3 (2Li2SO4. Na2SO4· K2SO4), Db4 (Li2SO4·K2SO4), and picromerite. Pitzermodel of electrolyte solution was used to check the obtained solubilities, and comparison wasin good agreement.
出处
《盐湖研究》
CSCD
1995年第2期34-39,共6页
Journal of Salt Lake Research
基金
国家自然科学基金
关键词
含锂
盐湖
卤水体系
相关系
Quinary system, Solubilities, Phase equilibrium, Pitier model