浅析铁铝尖晶石对镁铁尖晶石砖裂纹的影响

Analysis for effects of hercynite on crack of the ceylonite

通过对不同厂家生产的铁铝尖晶石原料和同一厂家不同批次的铁铝尖晶石原料,以及分别用其制备的镁铁尖晶石砖的XRD和SEM分析得出,在铁铝尖晶石原料电熔不够充分时,存在较多的β-Al2O3和杂质相,受外界因素影响,与镁砂发生扩散反应比较剧烈,进而导致镁铁尖晶石砖出现裂纹,而电熔相对较好的铁铝尖晶石原料对烧成的适应性相对较强。

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.