薄板坯连铸结晶器捞渣操作对漏钢的有效控制  

Effective control of slag removal on breakout in thin slab continuous casting

作　　者：杨学雨 郑立允 YANG Xue-yu;ZHENG Li-yun(CSP Plant,Handan Iron and Steel Co.,Ltd.,Hebei Steel and Iron Group,Handan 056009,Hebei,China;Material Science and Engineering Department,Hebei University of Engineering,Handan 056107,Hebei,China)

机构地区：[1]河北钢铁集团邯钢公司连铸连轧厂,河北邯郸056009 [2]河北工程大学材料科学与工程学院,河北邯郸056107

出　　处：《连铸》2021年第1期70-73,共4页Continuous Casting

摘　　要：根据邯钢CSP薄板坯流程及结晶器的特点,分析了结晶器渣条的存在对黏结漏钢、夹渣漏钢、纵裂漏钢等形式漏钢的影响机理。结合结晶器液面、热流、保护渣种类、结晶器上口火焰翻腾情况、钢包烧眼、漏钢预报报警情况等众多工艺生产因素对渣条形成情况进行判断分析,达到了对结晶器捞渣操作的精细控制,优化了结晶器内坯壳的润滑和传热条件,对降低漏钢率起到了显著的效果,使得CSP年漏钢率由0.07%降低到了0.03%。Based on the characteristics of CSP thin slab process and mold in Handan Iron and Steel Co.,Ltd.the influence mechanism of slag strip on the breakout such as adhesive breakout,slag leakage,longitudinal breakout is analyzed.Combining many process and production factors such as mold liquid steel level,heat flow,mold powder type,mold top mouth flame,breakout prediction alarm to analyze the formation of slag strips,it achieves fine control of the slag removal operation of the mold,optimizes the lubrication and heat transfer conditions of the shell in the mold,and has a significant effect on reducing the breakout rate.The annual breakout rate of CSP is reduced from 0.07%to 0.03%.

关 键 词：薄板坯连铸 结晶器 保护渣 渣条 捞渣 操作 漏钢 控制 

分 类 号：TF777.7[冶金工程—钢铁冶金]