A Study on Phase Equilibria of the Quaternary System Li⁺,Mg²⁺//SO₄^2-,B₄O₇^2--H₂O at 288K

• 责任者：Sang Shihua (College of Materials and Chemistry and Chemical Engineering ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Li Ming
• 刊名：Acta Geologica Sinica
• 出版年：2010
• 卷期：84(11)
• 关键词：硫酸盐矿物 ; sulfates ; 硼酸盐矿物 ; borates
• 页码：p.1704-1707
• 图表：2 illus., 1 table, 13 refs.
• 分类号：0700
• issnNo：ISSN0001-5717
• isbnNo：CN11-1951/P

Phase equilibria of the reciprocal quaternary system Li⁺, Mg²⁺//SO^2-₄, B₄O^2-₇-H₂O at 288K were studied by isothermal solution equilibrium method. Solubilities and densities of the reciprocal quaternary system were determined experimentally. According to the experimental data, the equilibrium phase diagram and water content diagram of the quaternary system were plotted, respectively. The experimental results show that the quaternary system at 288 K has two invariant points F₁ and F₂, five univariant curves E₁F₁, E₂F₂, E₃F₁, E₄F₂, and F₁F₂, and four fields of crystallization corresponding to Li₂B₄O₇·3H₂O, Li₂SO₄·H₂O, MgB₄O₇·9H₂O and MgSO₄ · 7H₂O.