SiAlON增强Al_2O_3-SiC-C铁沟料用后分析  

Research on used SiAlON strengthened Al_2O_3-SiC-C castables for iron trough

作　　者：吕春燕[1,2] 汪厚植[2] 顾华志[2] 曹枫[1] 张文杰[2] 

机构地区：[1]湖州师范学院化学系,浙江湖州313000 [2]武汉科技大学湖北省耐火材料与高温陶瓷重点实验室,湖北武汉430081

出　　处：《耐火材料》2009年第3期183-186,共4页Refractories

摘　　要：对原位SiAlON增强Al2O3-SiC-C铁沟浇注料进行了工业应用试验,并对用后铁沟浇注料残样进行了XRD、SEM和EMPA分析。结果表明:1)SiAlON增强Al2O3-SiC-C铁沟浇注料抗侵蚀性优良,一次性通铁量达到15万t以上;2)用后SiAlON增强Al2O3-SiC-C铁沟浇注料可分为蚀变层、反应层和原质层,各层中均有粒状β-SiAlON分布;3)SiAlON增强Al2O3-SiC-C铁沟浇注料在现场使用环境下比在实验室条件下更容易原位生成β-SiAlON,β-SiAlON的生成是该浇注料具有优良使用性能的根本原因。The industrial application experiment of in-situ SiAION strengthened Al2O3 - SiC - C castables for iron trough was carried out,then the remnant specimens of used castables were analyzed with XRD,SEM and EMPA. The results show that. （ 1 ） SiAION strengthened Al2O3 - SiC - C castables for iron trough has good corrosion resistance with over 150 thousand tons throughput of hot metal at one time; （2）The used castables includes corroded layer, reacted layer and original layer, and granular β-SiAlON distributed in each layer; （3）It＇s easier to form β-SiAlON when SiAION strengthened Al2O3 -SiC-C castables for iron trough is used on site than in experimental condition,and the formation of β-SiAlON is the essential reason that the castables has the excellent performance.

关 键 词：SIALON Al2O3-SiC-C材料 铁沟浇注料 工业应用 显微结构 

分 类 号：TQ175.732[化学工程—硅酸盐工业] TQ174.758