高碱性煤渣中Na2O含量对高铬砖抗侵蚀性能的影响研究  

Impact of Na2O Content in High Alkaline Coal Slag on Corrosion Resistance of High Chrome Brick

作　　者：冯志源 王晗[1] 耿可明 方旭[1] 范沐旭 吴昊天[1] Feng Zhiyuan;Wang Han;Geng Keming;Fang Xu;Fan Muxu;Wu Haotian(State Key Laboratory of Advanced Refractories,Sinosteel Luoyang Institute of Refractories Research Co.,Ltd.,Luoyang Henan 471039,China;Sinosteel Luonai Materials Technology Corporation,Ltd.,Luoyang Henan 471039,China)

机构地区：[1]中钢集团洛阳耐火材料研究院有限公司,先进耐火材料国家重点实验室,河南洛阳471039 [2]中钢洛耐科技股份有限公司,河南洛阳471039

出　　处：《煤化工》2020年第5期10-14,共5页Coal Chemical Industry

基　　金：国家重点研发计划项目资助(2017YFB0602600)。

摘　　要：为研究高碱性煤渣中Na2O含量对高铬砖抗侵蚀性能的影响,以现有煤渣为基础,利用CaO和Na2CO3配制不同Na2O含量的碱性煤渣,并进行高铬砖的静态坩埚法抗渣试验。结果显示:Na2O的存在能够促进Fe-Al/Cr尖晶石的形成,随着碱性煤渣中Na2O含量的增加,熔渣对高铬砖基质的侵蚀加剧,但熔渣在高铬砖内的渗透深度降低;高碱渣中的CaO与高铬砖中的单斜ZrO2反应生成锆酸钙,加剧了高铬砖的损坏。In order to study the influence of Na2O content in high alkaline coal slag on the corrosion resistance of high chrome brick,based on the existing coal slag,alkaline coal slag with different Na2O contents was prepared with CaO and Na2CO3,and the slag resistance test of high chrome brick with the static crucible method was carried out.The results showed that the existence of Na2O could promote the formation of Fe-Al/Cr spinel.With the increase of Na2O content in alkaline slag,the corrosion of high chrome brick matrix increased,but slag penetration depth decreased.CaO in high alkaline slag reacted with monoclinic ZrO2 in high chrome brick to form calcium zirconate,which aggravated the damage of high chrome brick.

关 键 词：高碱性煤渣 高铬砖 NA2O 静态坩埚法 抗渣侵蚀性能 扫描电镜分析 Fe-Al/Cr尖晶石 

分 类 号：TQ175.716[化学工程—硅酸盐工业] TQ545