超深冲用IF钢降低连铸铝损工艺研究  

STUDY ON Al-LOSS DURING CONTINUOUS CASTING OF EXTRA-DEEP DRAWING IF STEEL

作　　者：武志杰 程迪 范佳 韩闯闯 姜丽梅 周钢 Wu Zhijie;Cheng Di;Fan Jia;Han Chuangchuang;Jiang Limei;Zhou Gang(Handan Company,HBIS Group)

机构地区：[1]河钢集团邯钢公司,河北邯郸056003

出　　处：《河南冶金》2025年第1期15-18,共4页Henan Metallurgy

摘　　要：为解决IF钢“RH精炼→连铸”过程中铝损大的问题,对全过程进行取样检测,通过对酸溶铝含量变化规律的分析,找到铝损的主要原因是钢包顶渣氧含量高,在RH静置阶段渣中氧与钢液中铝元素反应;连铸开浇阶段,大包下渣导致氧化性钢渣进入钢液,也是造成铝损的原因。为降低连铸过程的铝损,采取降低转炉终点氧含量、优化顶渣改质、采用剩钢操作和优化开浇方式等措施,IF钢连铸过程的铝损由0.0085%降低至0.0053%。To solve the significant aluminum loss during the“RH refining→continuous casting”process of IF steel,sampling and testing were conducted throughout the entire process.Through analysis of the variation pattern of acid soluble aluminum content,it was found that the main cause of aluminum loss was the high oxygen content in the slag at the top of the ladle,during the RH settling stage,the oxygen in the slag corresponded with the aluminum element in the molten steel.In addition,during the pouring stage of continuous casting,the slag under the ladle caused oxidative steel slag to enter the molten steel,which was also the cause of aluminum loss.To reduce aluminum loss during the continuous casting process,measures such as reducing the end-point oxygen content of the converter,optimizing the top slag modification,using residual steel operation and optimizing the pouring method were taken.As a result,the aluminum loss during the continuous casting process of IF steel was reduced from 0.0085%to 0.0053%.

关 键 词：IF钢 铝损 顶渣改质 保护浇注 

分 类 号：TF703[冶金工程—钢铁冶金]