刚玉尖晶石砖的抗渣性能  

Corrosion Resistance of Corundum Spinel Castable to Different Slags

作　　者：周菲菲[1] 金从进[2] 陈丽娜[1] 李重河[1] 鲁雄刚[1] 

机构地区：[1]上海大学上海市现代冶金及材料制备重点实验室,上海200072 [2]宝山钢铁股份有限公司,上海201900

出　　处：《过程工程学报》2013年第2期339-344,共6页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金资助项目(编号:51225401;51074105);上海市科委基金资助项目(编号:11520500100;11DZ2283400)

摘　　要：采用真空感应炉进行了刚玉尖晶石耐火砖的动态抗渣实验,研究了高碱度脱硫渣和铝硅镇静钢精炼渣对该耐火砖的侵蚀,分析了两种碱性渣对其侵蚀机理.结果表明,刚玉尖晶石耐火砖抗铝硅镇静钢精炼渣侵蚀性能优于高碱度脱硫渣.刚玉尖晶石耐火砖抗侵蚀性能主要受渣中氧化铝和氧化钙含量影响.高碱度脱硫渣中CaO,SiO2,CaF2含量较高,与刚玉尖晶石耐火砖中的Al2O3发生反应低熔点物质,降低了渣的粘度,侵蚀较严重;高碱度脱硫渣中Al2O3含量低,导致尖晶石中MgO直接溶解,而铝硅镇静钢精炼渣中Al2O3含量高,在MgO/渣界面形成MA尖晶石,导致间接溶解,抑制渣侵蚀.The erosion of corundum spinel castable by high basicity desulfurization and Al-Si killed steel refining slags was studied by dynamic anti-slag experiments with a vacuum induction furnace, and their erosion mechanism analyzed. The results show that the anti-erosion of corundum spinel castable to Al-Si killed steel refining slag is better than that of high basicity desulfurization slag. Because the erosion behavior is mainly affected by the content of CaO and Al2O3 in the slag. The high basicity desulfurization slag contains more CaO, CaF2 and SiO2, which will react with Al2O3 in corundum spinel castable, leading to the serious erosion. Besides, the low content of Al2O3 in high basicity desulfurization slag makes MgO in spinel directly dissolve. The high content of Al2O3 in Al-Si killed steel refining slag will result in formation of spinel at the interface between MgO and slag, leading to indirect dissolving and high resistance to the erosion of slag.

关 键 词：尖晶石 抗渣性 侵蚀 渗透区 

分 类 号：TQ174.75[化学工程—陶瓷工业]