稀土钢工业生产中稀土收得率影响因素分析  

Analysis on Influencing Factors of Yield of Rare Earth in Industrial Production of Rare Earth Steel

作　　者：张晓峰 智建国[3] 刁望才 麻晓光 Zhang Xiao-feng;Zhi Jian-guo;Diao Wang-cai;Ma Xiao-guang(Inner Mongolia Enterprise Key Laboratory of Rare Earth Steel Products Research&Development,Baotou 014010,Inner Mongolia Autonomous Region,China;Technical Center of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China;Chief Engineer Office of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China)

机构地区：[1]内蒙古自治区稀土钢产品研发企业重点实验室,内蒙古包头014010 [2]内蒙古包钢钢联股份有限公司技术中心,内蒙古包头014010 [3]内蒙古包钢钢联股份有限公司总工室,内蒙古包头014010

出　　处：《包钢科技》2024年第1期24-27,共4页Science & Technology of Baotou Steel

摘　　要：稀土钢工业化生产过程中涉及稀土收得率问题,稳定的收得率是稀土钢产品性能稳定的重要保证。通过钢包添加稀土、中间包取样分析,研究了添加工位、添加量和钢液成分(氧活度、硫含量)对稀土钢稀土收得率的影响。结果表明,在钢包、中间包、结晶器添加稀土,稀土收得率依次提高;在LF钢包离位前添加稀土合金,添加量越大,收得率越低;钢液中氧、硫含量越高,稀土收得率越低。The industrial production process of rare earth steel involves the problem of yield of rare earth and stable yield is the important guarantee for stable performances of rare earth steel products.The effects of addition of position,addition amount and composition of liquid steel(oxygen activity,sulfur content)on yield of rare earth for rare earth steel are studied by adding rare earth in ladle and sampling analysis of tundish.The results showed that the yield of rare earth was increased in turn by adding rare earth in ladle,tundish and crystallizer;the larger the addition amount of rare earth alloy before off-position of ladle furnace,the lower the yield;the higher the contents of oxygen and sulfur in liquid steel,the lower the yield of rare earth.

关 键 词：添加工位 添加量 钢液成分 稀土收得率 

分 类 号：TF703[冶金工程—钢铁冶金]