【摘要】 综合运用Ｘ射线衍射、红外光谱、差热分析等方法，研究氧化铝生产中脱Ｓｉ反应生成物－－水合铝硅酸钠渣（硅渣）的组成和结构，证明其为有硅原子缺位的羟基方钠石，ＳｉＯ＿２与Ａｌ＿２Ｏ＿３摩尔比小于２．０主要系方钠石晶格骨架上硅原子缺位所致．更多还原

【Abstract】 The composition and crystal structure of the" White mud" ,or the Na-Al silicate slime in alumina production, is investigated by X-ray diffraction,IR spectra,differential thermal analysis, density detemination and chemical analysis concurrently. The chief phase, containing sodium aluminosilicate hydrate, has been identified to be hydroxy-sodalite crystals, usually having defect structure with vacancies of silicon atoms on the skeleton of sodalite lattice.更多还原