赤泥黑色玻璃的稳定性
来源期刊：中国有色金属学报2000年第4期
论文作者：张培新 林荣毅 闫加强
文章页码：551 - 554
关键词：赤泥； 玻璃稳定性； 析晶活化能
Key words：red mud; stability of glass; crystallization activation energy
摘 要：以赤泥为主要原料， 制备了黑色玻璃。应用差热分析(DTA), 利用AugisBennett方程和修正的Kissinger方程研究了玻璃析晶动力学，由两种方法计算得到的析晶活化能基本相同，同时采用 ky ( T )= A ·exp［(- E/RT)×(T / Tp)］为判据，比较了铁含量对玻璃稳定性的影响。 结果表明： 铁含量增高， 玻璃稳定性下降， 有利于玻璃的晶化， 高铁含量玻璃中 c (Fe2+ )/ c (Fe3+ )比值更接近于Fe3O4的比值，不同价态铁的相对含量不同， 玻璃稳定性不同。
Abstract: The crystallization kinetics of glassesusing red mud as raw materials was investigated by different thermal analysis(DTA). DTA experiment results were analyzed by AugisBennett method and modified Kissinger method. The crystallization activation energies obtained from both AugisBennett method and modified Kissinger method are almost the same. The stability of red mud glasses was evaluated by the crystallization kinetics criterion ky ( T )= A ·exp［(- E/RT )×( Δ T/Tp )］. The results showed that the stability of red mud glasses is decreased with the increase of Fe2O3 content, thus make the glasses be favorable for crystallization. The ratio of c (Fe2+) to c (Fe3+) in the glass of higher Fe2O3 content is more closeto the ratio of Fe3O4 . The stability of red mud glasses changes resultingin various ratio of c (Fe2+) to c (Fe3+ ).
