Abstract:

By XRD and SEM analysis on hercynites from different manufactures and hercynites from different batches of the same manufacture,as well as the ceylonite bricks produced with the above materials,it is found that a lot of β-Al2O3 and impurity phases exist in materials when hercynite fuses insufficiently,and they violently react with magnesia leading to cracking of the ceylonite brick influenced by external factors fluctuate,and the fully fused hercynite has a relative strong adaptability for firing.