高炉炉缸用Al_(2)O_(3)-SiO_(2)-SiC浇注料抗渣铁侵蚀机制研究  

Study on slag-iron corrosion resistance mechanism of Al_(2)O_(3)-SiO_(2)-SiC castables for blast furnace hearth

作　　者：曹楗 王翠[1] 张建良[2] 郑敬先[3] 焦克新[2] 杨晓婷[3] CAO Jian;WANG Cui;ZHANG Jianliang;ZZHENG Jingxian;JIAO Kexin;YANG Xiaoting(State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China;School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing100083,China;Beijing Shougang Co.,Ltd.,Beijing 100043,China)

机构地区：[1]北京科技大学绿色低碳钢铁冶金全国重点实验室,北京100083 [2]北京科技大学冶金与生态工程学院,北京100083 [3]北京首钢股份有限公司,北京100043

出　　处：《钢铁研究学报》2024年第4期424-434,共11页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目(52204334)。

摘　　要：对2种浇注料在实验室和现场情况下进行熔渣和铁水侵蚀研究。采用扫描电镜-能谱分析等方法对浇注料的侵蚀部分进行表征,明晰其侵蚀机制,并为高炉炉缸浇注料的合理选用、优化等提供理论参考。结果表明:浇注料的抗铁水侵蚀性能较好,且浇注料2的抗铁水侵蚀性能优于浇注料1;浇注料的抗熔渣侵蚀性能较差,浇注料1的抗熔渣性能远优于浇注料2。浇注料被铁水侵蚀是通过铁水的渗透、冲刷和硅化合物的反应形成的。浇注料被熔渣侵蚀是通过浇注料的溶解、熔渣的渗透和两者界面处发生的反应进行的。硅化合物会通过与铁液发生反应促进铁水侵蚀浇注料,氧化铝则对渣侵蚀浇注料的影响较大。在高炉运行过程中,浇注料1的使用价值超过浇注料2,更适合应用于铁口中心线下的炉缸侧壁处。The slag and molten iron erosion of two kinds of castables in laboratory and field conditions were studied.The erosion part of the castable was characterized by scanning electron microscopy-energy dispersive spectroscopy(SEM-EDS)to clarify its erosion mechanism.It also provides a theoretical reference for the rational selection and optimization of castables for blast furnace hearth.The results show that the castable has good corrosion resistance to molten iron,and the corrosion resistance of castable 2 is better than that of castable 1;the slag corrosion resistance of castables is poor,and the slag corrosion resistance of castable 1 is much better than that of castable 2.The erosion of castables by molten iron is formed by the penetration and erosion of molten iron and the reaction of silicon compounds.The erosion of the castable by the slag is carried out by the dissolution of the castable,the penetration of the slag and the reaction at the interface between the two.Silicon compounds will promote the erosion of castables by molten iron by reacting with molten iron,while alumina has a great influence on the erosion of slag castables.During the operation of the blast furnace,the use value of castable 1 exceeds that of castable 2,which is more suitable for the hearth sidewall under the center line of the taphole.

关 键 词：高炉 浇注料 侵蚀机制 铁 渣 

分 类 号：TF573[冶金工程—钢铁冶金]