【摘要】 铝土矿尾矿是一种复杂的铝硅酸盐矿物 ,其综合利用是铝工业急需解决的重要课题 ,热处理则是其综合利用时要涉及的共性问题。运用差热 -热重 (DTA -TG)、扫描电镜 (SEM )和X -射线衍射 (XRD)技术研究了复杂铝硅酸盐矿物热处理过程的矿物相变化 ,探讨了热处理过程的动力学 ,讨论了热处理时复杂铝硅酸盐矿物的SiO2 -Al2 O3 系统相图 ,指出了复杂铝硅酸盐矿物高效应用的基本原则更多还原

【Abstract】 The tailings of bauxite ores are really a kind of complex aluminosilicate. Their comprehensive utilization is an important challenge for aluminium industry that should be solved urgently in which thermal treatment is a common problem involved. Differential thermal analysis (DTA), thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and X ray diffraction (XRD) techniques are used to investigate the structural phase changes of the aluminosilicate during the thermal treatment. The thermal treatment related kinetics and SiO 2 Al 2O 3 phase diagram are discussed. The basic pinciples of highly efficient application of the complex aluminosilicate are proposed.更多还原