【摘要】 测定了四元体系MgCl2 _MgSO4 _CO(NH2 ) 2 _H2 O(不含硫酸盐脱水区 )在 2 5℃时的等温溶度及相应饱和溶液的密度值和折射率 .绘制了该体系的溶度图和性质图 .四元体系做出了 8支共饱线 ,3个四元无变点 .溶度图有 6个单饱和区 ,分别对应CO (NH2 ) 2 ,MgSO4 ·CO (NH2 ) 2 ·2H2 O ,MgCl2 · 4CO (NH2 ) 2 · 2H2 O ,MgCl2 ·CO (NH2 ) 2 · 4H2 O ,MgCl2 ·6H2 O和MgSO4 ·xH2 O(x =4 ,5 ,6,7) .更多还原

【Abstract】 The isothermal solubility and the refraction indexes, densities of saturated solutions in the quaternary system MgCl 2_MgSO 4_CO(NH 2) 2_H 2O(except the regions of dehydrated sulfate)at 25 ℃ have been investigated for the first time. The solubility diagram, property diagrams of the system have been constructed. In the system, eight branch curves and three eutectic points have been determined. In the solubility diagram, there are six crystallization regions corresponding to CO(NH 2) 2,MgSO 4·CO(NH 2) 2·2H 2O,MgCl 2·4CO(NH 2) 2·2H 2O,MgCl 2·CO(NH 2) 2·4H 2O,MgCl 2·6H 2O and MgSO 4· x H 2O( x= 4,5,6,7),respectively for MgCl 2_MgSO 4_CO(NH 2) 2_H 2O system.更多还原