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采用粉末烧结方法制备ＭｇＯ－Ｂ２Ｏ３－ＳｉＯ２三元系中不同组成的样品。用Ｘ－射线衍射、岩相和化学分析方法相结合研究了１１００℃４０≤ＭｇＯ％＜６０组成范围内的相关系，结果表明可用３ＭｇＯ·Ｂ２Ｏ３－２ＭｇＯ·ＳｉＯ２－２ＭｇＯ·Ｂ２Ｏ３，２ＭｇＯ·Ｂ２Ｏ３－２ＭｇＯ·ＳｉＯ２－ＭｇＯ·ＳｉＯ２，２ＭｇＯ·Ｂ２Ｏ３－ＭｇＯ·ＳｉＯ２－ＳｉＯ２三个三角形表示各平衡相的相关系。应用重心规则计算平衡相量与组成的关系，其结果可用回归方程表示，并可作为控制富硼渣的理想组成的根据。
Different compositions of MgO-B2O3-SiO2 ternary system were prepared by powder sintering method. The phase relationship in the range of 1100 ℃ 40≤MgO% <60 was studied by the combination of X-ray diffraction, petrographic and chemical analysis. The results showed that the compositions of 3MgO · B2O3-2MgO · SiO2-2MgO · B2O3, 2MgO · B2O3- 2MgO · SiO2-MgO · SiO2, 2MgO · B2O3-MgO · SiO2-SiO2 Three triangles represent the phase relationship between the various phases. The relationship between the equilibrium phasor and the composition is calculated by applying the gravity center rule. The result can be expressed by the regression equation and can be used as the basis for controlling the ideal composition of the boron-rich slag.