摘要
利用扫描电镜SEM、能谱仪EDS和X-射线衍射仪XRD研究了铝酸钙水泥(CAC)结合高铝质预制电炉盖的蚀损机制。结果表明,预制件在承受熔渣的化学侵蚀之前,已发生热反应生成CA6,形成CA6结合刚玉-莫来石颗粒的相组合。CaO-Fe2O3(FeO)-SiO2系熔渣的侵蚀和渗透作用导致生成F′(FA)型尖晶石固溶体,CA6固溶体,C(A,F)2,C2(A,F),C2(A,F)S和Naglschmidte等新相,其共同特点是皆非纯相。液相沿颗粒的间隙渗入至较低温区凝固。适量CAC不妨碍其性能和使用效果。
This paper studied the mechanism of calcium aluminate cement bonded high-alumina monolithic roof for HP/UHP EAF by SEM, EDS and XRD. The investigation reveals that before bearing the chemical corrosion from a melting slag, the fabricate has taken place thermal reaction and generated CA6 forming a phase combination of CA6 combined corundum-mullite grain. Corrosion and penetration of CaO- Fe2O3 （FeOn） -SiO2 solution leads to the generation of new phases such as F＇ （FA） spinel solid solution, C（A, F）2, C2（A, F）, C2 （A, F） S and Naglschrnidte, etc which are characterized in that they all belong to impure phase. The liquid phase penetrates along grain distances and solidifies at lower temperature zone. Proper quantities of CAC have no influence on its performance and use.
出处
《工业加热》
CAS
2008年第3期43-48,共6页
Industrial Heating
关键词
电弧炉
炉盖
铝酸钙水泥
EAF
roof
calcium aluminate cement
