Microstructural homogeneity of a rebonded magnesia-chrome brick used in tunnel kiln in a period of 10 years were studied by means of OM,SEM,EDAX and XRD.

• 利用OM、SEM、EDAX和XRD检测方法研究了一种在隧道窑烧成带使用10年的再结合镁铬砖显微结构均化现象。