硫酸分解含硼和镁矿物提取硼酸和硫酸镁的相图分析

Analysis on Phase Diagrams of Preparation of Boric Acid and Magnesium Sulfate from Mineral Containing Boron and Magnesium by Sulfuric Acid Decomposition

依据２５℃和１００℃Ｈ３ＢＯ３－ＭｇＳＯ４－Ｈ２Ｏ体系相图，对硼酸和硫酸镁的混合物进行分离，提出高温蒸发结晶ＭｇＳＯ４·Ｈ２Ｏ和低温冷却补加被分离混合物析出Ｈ３ＢＯ３的工艺流程。

On the basis of phase diagrams of H3BO3-MgSO4-H2O system at 25 and 100, for separation of mixtures of H3BO3 and MgSO4, technological process of MgSO4H2O crystallization by evaporating above mixtures at high temperature and H3BO3 separation by cooling down the MgSO4 mother liquor with adding raw mixtures at low temperature is presented, the mass balance is also discussed.