复合固废制备堇青石微晶玻璃析晶动力学研究

Study on Crystallization Kinetics of Cordierite Glass-Ceramics Prepared from Composite Solid Wastes

摘要: 以铁尾矿、煤矸石和高碳铬铁渣三种工业固废为原料，不加任何形核剂以及其他原料，采用烧结法制备堇青石微晶玻璃。利用差热分析仪研究复合固废制备微晶玻璃析晶动力学的特点。结果表明，升温速率控制在10℃/min以下，晶体的生长指数n ≥ 3，可以实现体积析晶。

Abstract: ^*通讯作者。Using iron tailings, coal gangue, and high-carbon ferrochromium slag as raw materials, without adding any nucleating agents or other ingredients, cordierite glass-ceramics were prepared via the sintering method. Differential thermal analysis was employed to investigate the crystallization kinetics characteristics of the glass-ceramics produced from the composite solid wastes. The results indicated that by controlling the heating rate below 10˚C /min and ensuring a crystal growth exponent n ≥ 3, volumetric crystallization could be achieved.