【摘要】 研究了二个三元体系Ｌｉ＋／ＣＯ３２－、 Ｂ４Ｏ７２－Ｈ２Ｏ（１）和Ｋ＋／ＣＯ３（２－）、 Ｂ４Ｏ７（２－）－Ｈ２Ｏ（２） ２９８Ｋ时的相平衡液相的物化 性质（密度、折光率、粘度、电导率、ｐＨ值）。研究表明：这二个三元体系均属简单共饱型，无复盐或固溶体形 成。体系（１）的两段溶解度曲线对应于无水Ｌｉ２ＣＯ３和Ｌｉ２Ｂ４Ｏ７Ｈ２Ｏ结晶区，体系（２）的两段溶解度曲线对应于 Ｋ２ＣＯ３·３／２Ｈ２Ｏ和Ｋ２Ｂ４Ｏ７·４Ｈ２Ｏ结晶区。用经验公式对平衡液相的密度、折光率进行了计算，计算值与实验值非常 吻合，最大绝对偏差仅为０．００１１。更多还原

【Abstract】 In accordance with the composition of the brine of Zabuye Saline lake, Tibet, phase equilibrium and physicochemical properties （density, refractive, index, viscosity, conductivity and pH） of the ternary systems Li⁺/CO₃^2-. B₄O₇^2--H₂O （1） and K⁺/CO₃^2- B4O2-7-H₂O （2） were investigated at 298K under isothermal condition. The two ternary systems are all of simple eutonic type, no complex salt and solid solution were found in the systems. Two crystallization regions of system （1） correspond to Li2CO3 and Li2B4O7.3H2O, and that of system （2） correspond to K2CO3.3/2H3O and K3B4O7.4H2O. Densities and refractive indexes of the equilibrium solutions were calculated with empirical equations, the calculated values agree well with the measured values, the deviations between them are less than 0.0011.更多还原