Solid–Liquid Phase Equilibria of the Quaternary system Li₂SO₄–LiBO₂–Li₂B₄O₇–H₂O and the Ternary Subsystem LiBO₂–Li₂B₄O₇–H₂O at T = 288.15 K and p = 0.1 MPa

The solubilities, densities, refractive indices, and pH values in the systems LiBO2–Li2B4O7–H2O and Li2SO4–LiBO2–Li2B4O7–H2O at 288.15 K were studied by the classical dissolution method in this paper. The solid–liquid equilibrium phase diagrams and the physicochemical property diagrams were constructed with the experimental results. The phase diagram of the ternary system is composed of two single-salt crystallizations of LiBO2·8H2O and...