不同熔渣对钢包铝镁铬材料渣蚀行为的影响  

The Corrosion Behavior of Different Fused Slag to Alumina-Magnesia-Chrome Ladle Refractory

作　　者：汪姣[1] 顾华志[1] 汪厚植[1] 刘光明[2] 李继铮[2] 

机构地区：[1]武汉科技大学湖北省耐火材料与高温陶瓷重点实验室,武汉430081 [2]武汉钢铁(集团)公司,武汉430083

出　　处：《硅酸盐通报》2007年第2期390-393,共4页Bulletin of the Chinese Ceramic Society

摘　　要：选取冶炼取向硅钢和铝镇静钢的精炼终渣及钢包用铝镁铬砖,采用静态坩埚法于1600℃×3h下进行熔渣侵蚀试验,对渣蚀后试样作显微结构分析,并测定熔渣的化学成分和熔化温度。结果显示,随着熔渣中Al2O3含量的升高和碱度的增加,熔渣的熔点升高,粘度增加。粘度较大的熔渣与耐火材料接触后扩散较慢,对耐火材料的侵蚀和渗透减弱。并且当熔渣与耐火材料的反应产物为高熔点的CA2、CA6和MA尖晶石相且连续交错分布时,能堵塞液相扩散通道,抑制熔渣向耐火材料内部的进一步渗透。Penetration and corrosion resistance＇ of the alumina-magnesia-chrome brick used in ladle with two kinds of slag sampled from the refining final slag of the grain-oriented steel and aluminum killed steel at 1600℃ for 3h were investigated by SEM analysis using static corrosion test in this paper. Meanwhile, the melting points and chemical composition of the slag were tested and analysized. The results show that the melting points and viscosity of fused slag increase with the increasing of the content of Al2O3 and alkalinity of fused slag. It diffuses slowly and has low penetration and corrosion rate when the high viscosity slag reactes with brick. When the reaction products form as high melting point CA2, CA6 and MA spinel in a continuous solid phase it will clog the liquid channel and resist the further diffusion of fused slag in the brick.

关 键 词：熔渣 铝镁铬砖 侵蚀 显微结构分析 

分 类 号：TQ175.713[化学工程—硅酸盐工业]