TiO_(2)添加量对Al_(2)O_(3)-SiC-C质炮泥性能的影响  

Effect of TiO_(2) addition on performance of Al_(2)O_(3)-SiC-C taphole clay

作　　者：鞠茂奇 梁永和[1] 聂建华 蔡曼菲 郭梦真 Ju Maoqi;Liang Yonghe;Nie Jianhua;Cai Manfei;Guo Mengzhen(The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China;不详)

机构地区：[1]武汉科技大学材料与冶金学院,湖北武汉430081

出　　处：《耐火材料》2022年第6期489-494,共6页Refractories

摘　　要：为了提高Al_(2)O_(3)-SiC-C质炮泥的性能,研究了TiO_(2)添加量(质量分数分别为0、1%、2%、3%、4%)对Al_(2)O_(3)-SiC-C质炮泥热处理后烧后线变化、致密度、常温强度、抗氧化性和抗渣性等性能的影响。结果表明:1)在1 100℃保温3 h热处理后,试样均发生收缩,其线收缩率随TiO_(2)的增多而增大;试样的致密度和常温强度也均随TiO_(2)的增多而增大。2)在1 450℃保温3 h热处理后,由于试样中莫来石的生成伴随体积膨胀,试样均发生膨胀,其线膨胀率随TiO_(2)的增多而增大;试样的致密度随TiO_(2)的增多而减小;试样的常温强度随TiO_(2)的增多呈先增大后减小的变化趋势,在TiO_(2)添加量为3%(w)时达到最大。3)添加TiO_(2)后,炮泥的抗氧化性和抗渣侵蚀性均略有改善。In order to improve the properties of Al_(2)O_(3)-SiC-C taphole clay,the effects of TiO_(2) additions(0,1%,2%,3%,and 4%,by mass) on the performance of samples after hot treatment were studied,including the permanent linear change,the density,the cold strength,the oxidation resistance and the slag resistance,etc.The results show that:(1)after heat treatment at 1 100 ℃ for 3 h,all samples shrink and the linear shrinkage rate increases with the TiO_(2) addition increasing,the density and the cold strength also increase with the increase of TiO_(2) addition;(2)after heat treatment at 1 450 ℃ for 3 h,all samples expand due to the volume expansion caused by the formation of mullite;with the TiO_(2) addition increasing,the linear expansion rate increases,the density decreases,and the cold strength increases first and then decreases and reaches the maximum with 3% of TiO_(2);(3)adding TiO_(2),the oxidation resistance and the slag corrosion resistance of the taphole clay are slightly improved.

关 键 词：TiO_(2) 炮泥 Al_(2)O_(3)-SiC-C 致密度 常温强度 抗侵蚀性 

分 类 号：TQ175[化学工程—硅酸盐工业]