含硼添加物对Al2O3-SiC-C质炮泥性能的影响  

Effects of boron-containing additive on properties of Al2O3-SiC-C taphole clay

作　　者：任海成 王守业[1] 曹喜营[1] 冯海霞[1,2] 柳军 焦云杰[1] Ren Haicheng;Wang Shouye;Cao Xiying;Feng Haixia;Liu Jun;Jiao Yunjie

机构地区：[1]中钢集团洛阳耐火材料研究院有限公司先进耐火材料国家重点实验室,河南洛阳471039 [2]西安建筑科技大学冶金工程学院,陕西西安710055

出　　处：《耐火材料》2020年第1期14-18,共5页Refractories

摘　　要：以电熔白刚玉、碳化硅、焦炭、树脂粉、氮化硅铁和广西白泥为主要原料,含硼添加物为炮泥的助烧剂,借助于热重分析仪、扫描电子显微镜和X射线衍射仪等分析手段,探究含硼添加物加入量(添加质量分数分别为0、2%、4%和6%)对炮泥结构与性能的影响。结果表明:随着含硼添加物加入量的提高,炮泥的体积密度逐渐减小,温度不同,变化趋势不同,炮泥具有良好的抗渣性能。含硼添加物可促进炮泥烧结,使炮泥在1000℃热处理后呈现体积收缩。但由于1450℃热处理后,莫来石的形成弥补了烧结产生的收缩,对试样的线变化率、显气孔率、体积密度和耐压强度影响较大。综上,含硼添加物加入量为4%(w)时,炮泥的综合性能最佳。With white fused corundum,silicon carbide,coke,resin powder,ferro-silicon nitride and Guangxi white clay as the main raw materials and boron-containing additive as the sintering aids,the effects of the boron-containing additive addition(0,2%,4%,and 6%,by mass)on the structure and properties of the taphole clay were studied by means of TG,SEM and XRD.The results show that the bulk density decreases gradually with the increasing boron-containing additive addition;the changing trend varies at different temperatures;the taphole clay has good slag resistance;the boron-containing additive can promote the sintering of the taphole clay and make it shrink after treating at 1000℃;however,the formation of mullite compensates for the shrinkage produced by sintering after treating at 1450℃,which has a great influence on the linear change rate,the apparent porosity,the bulk density and the cold crushing strength.To sum up,the comprehensive performance of the taphole clay is optimum when 4%of boron-containing additive is added.

关 键 词：炮泥 含硼添加物 助烧剂 体积密度 

分 类 号：TQ175[化学工程—硅酸盐工业]