| Abstract: Metastable equilibria at 273 K in the quaternary system Li+，Na+//CO32-，B4O72--H2O was studied by isothermal evaporation method. Metastable equilibrium solubilities and densities of the solution were determined experimentally. According to the experimental data, the metastable equilibrium phase diagram was plotted. In the metastable phase diagram, the quaternary system has two invariant points E and F, five univariant curves E1E, E2E, E3F, E4F and EF, four fields of crystallization: Na2B4O7·10H2O, Na2CO3·10H2O, Li2B2O4·16H2O and Li2CO3. Boxe (Na2B4O7·10H2O) has the biggest crystallization field, and Na2CO3·10H2O has the smallest crystallization field in the quaternary system. |
