CAJ | 학술논문

用等温溶解平衡法研究三元体系LiBO2–Li2CO3–H2,O在288.15,K时稳定相平衡及其溶液物化性质(密度、折光率和 pH)，绘制该三元体系的稳定相图和平衡溶液物化性质–组成图．研究结果表明：该三元体系有一个共饱点(LiBO2·8H2,O＋Li2CO3)、两条单变量溶解度曲线和两个单盐结晶区，两个结晶区分别对应为 LiBO2·8H2O 和 Li2CO3，其中 Li2CO3结晶区大而 LiBO2·8H2O 结晶区较小．该体系属水合物I型，既没有发生脱水现象，也没有复盐和固溶体产生．采用经验公式计算该体系平衡溶液的密度和折光率，计算值与实验值吻合较好．
용등온용해평형법연구삼원체계LiBO2–Li2CO3–H2,O재288.15,K시은정상평형급기용액물화성질(밀도、절광솔화 pH)，회제해삼원체계적은정상도화평형용액물화성질–조성도．연구결과표명：해삼원체계유일개공포점(LiBO2·8H2,O＋Li2CO3)、량조단변량용해도곡선화량개단염결정구，량개결정구분별대응위 LiBO2·8H2O 화 Li2CO3，기중 Li2CO3결정구대이 LiBO2·8H2O 결정구교소．해체계속수합물I형，기몰유발생탈수현상，야몰유복염화고용체산생．채용경험공식계산해체계평형용액적밀도화절광솔，계산치여실험치문합교호．
The solubilities and physicochemical properties(density,pH value,and refractive index)of the ternary system LiBO2-Li2CO3-H2O at 288.15,K were investigated with the method of isothermal dissolution equilibrium. According to the experimental results of the ternary system,the stable phase diagram and the diagrams of physicochemical properties versus composition were plotted. In the phase diagrams of the ternary system,there was one eutectic point corresponding to lithium metaborate octahydrate and lithium carbonate(LiBO2·8H2O+Li2CO3),two isotherm dissolution curves,and two crystalliza-tion regions corresponding to LiBO2·8H2O and Li2CO3,respectively. This system belongs to hydrate type I,and neither de-hydration phenomenon nor double salts and solid solutions were found. The calculated values of density and refractive index using empirical equations of the ternary system are in good agreement with the experimental values. .