摘要
采用回转抗渣法模拟研究了试验温度、保温时间和熔渣加入量等因素对铝铬砖和镁铬砖抗艾萨炉炉渣侵蚀能力的影响。用SEM、EDAX及XRD等方法,对抗渣试样的显微结构和矿物组成进行了分析研究。结果表明:随着侵蚀温度的升高、保温时间的延长及炉渣加入量的增加,铝铬砖和镁铬砖的侵蚀面积增大;熔渣渗入铝铬砖后,形成铁铝尖晶石和铁铬尖晶石保护层,阻止了熔渣的侵蚀;三种耐火材料抗艾萨炉炉渣侵蚀能力由强到弱为:铝铬砖>电熔再结合镁铬砖>直接结合镁铬砖。
The slag resistances of Al2O3 -Cr2O3 and MgO -Cr2O3 bricks to ISA furnace slag were simulatively studied by rotary slag test. The influence of test temperature,soaking time and slag addition was discussed. Microstructure and mineral composition were investigated by SEM, EDAX and XRD. The results showed that：the increase of test temperature,soaking time and slag addition enlarged the corrosion areas of Al2O3 -Cr2O3 and MgO -Cr2O3 bricks. The protection layer of ferro-alumina spinel and ferricchromopicotite formed when slag penetrated into the Al2O3 -Cr2O3 brick,which resisted the ISA furnace slag corrosion. The slag resistance of alumina -chrome brick was better than that of fused rebonded magnesia -chrome brick, which was better than that of direct bonded magnesia -chrome brick.
出处
《耐火材料》
EI
CAS
北大核心
2007年第3期180-182,共3页
Refractories
关键词
艾萨炉
铝铬砖
镁铬砖
抗渣性
模拟试验
ISA furnace,Alumina - chrome brick, Magnesia - chrome brick,Slag resistance,Simulation test
