方镁石-铁铝尖晶石复合耐火材料的烧结行为研究  

Research on sintering behavior of periclase-hercynite composite refractories

作　　者：张军杰 钱晶 钱志明 刘成强 蔡云 Zhang Junjie;Qian Jing;Qian Zhiming;Liu Chengqiang;Cai Yun(Jiangsu Nuoming High Temperature Materials Co.,Ltd.,Yixing 214266,China)

机构地区：[1]江苏诺明高温材料股份有限公司,宜兴214266

出　　处：《耐火与石灰》2022年第5期5-9,共5页Refractories & Lime

摘　　要：以97高纯镁砂和电熔铁铝尖晶石为原料,电熔铁铝尖晶石的加入量为7%、加入粒度为2.5~0.3 mm,在1 600℃保温4~5 h制备方镁石-铁铝尖晶石复合耐火材料。检测材料的显气孔率、体积密度、常温耐压强度、荷重软化温度、热震稳定性和化学组成,利用SEM和EDS研究方镁石-铁铝尖晶石复合耐火材料在高温下的烧结行为。结果表明:本试验得到的方镁石-铁铝尖晶石复合耐火材料性能优异,完全能够满足水泥窑烧成带的使用。The periclase-hercynite composite refractories were prepared under 1 600 ℃ for 4 ~ 5 h,using high purity sintered magnesia and fused hercynite( 7%,2.5 ~ 0.3 mm) as raw materials,the properties( apparent porosity,bulk density,cold crushing strength,refractoriness under load,thermal shock resistance and chemical composition) have been studied. The sintering behavior of periclase-hercynite composite refractories at high temperature was studied by SEM and EDS. The results show that the periclasehercynite composite refractories prepared in this test has excellent performance,which can fully meet the use of cement kiln burning zone.

关 键 词：铁铝尖晶石 高纯镁砂 环状结构 (Mg Fe)Al2O4固溶体 高温韧性 

分 类 号：TQ175.713.3[化学工程—硅酸盐工业]