RH高效深度脱碳与协同脱氧关键技术

doi:10.13228/j.boyuan.issn1006-9356.20230315

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摘要围绕IF钢RH精炼高效深度脱碳与协同脱氧目标,从RH精炼碳氧热力学入手,分析了RH脱碳与协同脱氧的可行性和策略;从脱碳反应动力学入手,分析了不同脱碳阶段高效脱碳策略。同时,研究了RH强制脱碳、吹氧流量与枪位控制等高效脱碳与控氧协同技术,以及真空压降控制、循环流量优化、真空罐内部吹氩强化脱碳等RH精炼高效脱碳关键技术和RH精炼脱碳终点氧含量控制、顶渣氧化性控制等控氧关键技术,进一步提出通过上述技术集成应用实现RH高效深度脱碳与脱氧的协同策略。

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	刘建华
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	杨晓东
	张硕

关键词 ： RH精炼, 脱碳, 控氧, IF钢, 夹杂物

Abstract：Focusing on the objective of efficient deep decarburization and synergistic deoxidation for IF steel production during RH refining, the feasibility and strategies of RH decarburization and synergistic deoxidation are analyzed based on the carbon-oxygen thermodynamics during RH refining. The efficient decarburization strategies at different decarburization stages are determined according to the kinetics of decarburization reaction. The synergistic technologies of efficient decarburization and oxygen control, such as RH forced decarburization, and oxygen blowing flow rate and lance position control are analyzed. Meanwhile, the key technologies of RH efficient decarburization, such as vacuum pressure drop control, circulation flow rate optimization, and enhanced decarburization by argon blowing inside the vacuum chamber, and the key technologies of oxygen control, such as oxygen content control at the end of RH decarburization, and top slag oxidability control are researched. A synergistic strategy of efficient deep decarburization and deoxidation during RH refining through the integrated application of the above technologies is further proposed.

Key words： RH refining decarburization oxygen control IF steel inclusion

收稿日期: 2023-05-18

基金资助:国家重点研发计划资助项目(2021YFE0113200)

作者简介: 刘建华(1966—), 男, 博士, 教授; E-mail: liujianhua@metall.ustb.edu.cn

引用本文:

刘建华, 袁保辉, 何杨, 杨晓东, 张硕. RH高效深度脱碳与协同脱氧关键技术[J]. 中国冶金, 2023, 33(11): 1-11. LIU Jianhua, YUAN Baohui, HE Yang, YANG Xiaodong, ZHANG Shuo. Key technologies of efficient deep decarburization and synergistic deoxidation during RH refining[J]. China Metallurgy, 2023, 33(11): 1-11.

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http://www.zgyj.ac.cn/CN/10.13228/j.boyuan.issn1006-9356.20230315 或 http://www.zgyj.ac.cn/CN/Y2023/V33/I11/1

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