ZrO_(2)-C质浸入式水口渣线耐火材料的侵蚀机制分析  

Analysis of corrosion mechanism of slag-line refractories of ZrO_(2)-C submerged entry nozzles

作　　者：田晨 职建军[2] 甘菲芳[2] 范正洁[2] 高华[2] 袁磊 刘国齐[3] 于景坤 李红霞[3] Tian Chen;Zhi Jianjun;Gan Feifang;Fan Zhengjie;Gao Hua;Yuan Lei;Liu Guoqi;Yu Jingkun;Li Hongxia(School of Metallurgy,Northeastern University,Shenyang 110819,Liaoning,China;不详)

机构地区：[1]东北大学冶金学院,辽宁沈阳110819 [2]宝山钢铁股份有限公司,上海宝山201900 [3]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

出　　处：《耐火材料》2023年第2期113-116,共4页Refractories

基　　金：国家自然科学基金资助项目(No.52174302,No.51932008);中原千人计划-中原科技创新领军人才(204200510011)。

摘　　要：针对目前连铸浸入式水口渣线部位耐火材料的侵蚀造成水口服役失效与连铸生产效率无法提升的难题,以某钢厂低碳铝镇静钢连铸常用的ZrO_(2)-C质浸入式水口为例,对其侵蚀后的水口渣线部位耐火材料进行取样,详细分析了水口渣线部位耐火材料的侵蚀原因与机制。结果表明:保护渣对水口外部渣线材料的冲刷、溶解与反应是导致浸入式水口渣线部位侵蚀和缩颈的核心问题。因此,如何有效防止或避免渣线部位耐火材料与保护渣间的接触与反应对抑制渣线侵蚀至关重要。In view of the service failure and low continuous casting production efficiency due to the corrosion of refractories at slag-line in the submerged entry nozzles,a submerged entry nozzle for the low-carbon aluminum killed steel continuous casting in one steel plant was sampled and taken as the research object to analyze the causes and the mechanism of refractory corrosion at the slag-line.The results show that the core issue of the corrosion and necking of the slag-line materials is that the slag-line material are eroded,dissolved,and reacted by the mold flux gradually.Therefore,it is important to suppress or avoid the contact and reaction between the mold flux and slag-line materials.

关 键 词：连铸 浸入式水口 渣线 ZrO_(2)-C 抗渣侵蚀 

分 类 号：TQ175[化学工程—硅酸盐工业]