工程科学学报.第42卷，增刊1：83-88.2020年12月 Chinese Journal of Engineering,Vol.42,Suppl.1:83-88,December 2020 https://doi.org/10.13374/j.issn2095-9389.2020.03.20.s02;http://cje.ustb.edu.cn LF精炼过程砷脱除的工业试验 李文博四，赵海泉 攀枝花学院钒钛学院.攀枝花617000 ☒通信作者，E-mail:liwenbo315@126.com 摘要基于炼钢生产过程中残余元素砷较难脱除的特点，并结合以往实验室热态脱研究结果.通过钢包精炼炉(Lde furnace refining furnace,,LF炉)钢液脱砷工业试验，研究了LF精炼炼钢过程中有关砷的脱除方法.采用Al-MgCa合金作为 脱砷剂，研究发现，LF炉可以实现钢液精炼脱砷，但钢液精炼过程中硫和钙的含量是实现工业条件下脱砷的限制环节，因此， 必须控制钢液中硫和钙的含量以保证钢液脱砷效果.LF炉精炼脱砷之前必须将钢液中的硫含量降至低于0.01%，加入 A1-Mg-Ca合金后钢液中钙含量需高于0.0055%. 关键词残余元素：脱砷：钢液：砷：精炼 分类号TF769.2 Industrial experimental study on dearsenication in LF refining process LI Wen-bo,ZHAO Hai-quan School of Vanadium and Titanium,Panzhihua University,Panzhihua 617000,China Corresponding author,E-mail:liwenbo315@126.com ABSTRACT With the gradual depletion of high-grade iron ore resources,the usage amount of low-grade iron ore is increasing year by year.Moreover,given the environmental protection requirements and the objective to reduce industrial cost,the usage of scrap is significantly increasing.The above occurrences have led to a large increase in the percentage of residual elemental arsenic in steel.Also, the requirement for lower arsenic content in finished steel is increasingly stricter.Presently,the iron and steel enterprises have not yet developed a mature technology for dearsenication in molten steel;moreover,the theoretical studies on the dearsenication in molten steel are relatively few,which lead to a lack of relevant theoretical data.Therefore,how to realize an effective method for dearsenication in molten steel is a technical problem in the iron and steel industry.Considering the problems of poor dearsenication in the steelmaking process and the previous experimental results of dearsenication in laboratory.The dearsenication in the process of steelmaking was investigated through an industrial trial of dearsenication in the molten steel in the ladle furnace (LF)refining furnace.The Al-Mg-Ca alloy was chosen as dearseicating agent,The industrial test about dearsenication in the molten steel show:the dearsenication in the molten steel can be realized in the LF furnace,the sulfur and calcium content in the molten steel is restrictive factor for dearsenication under industrial condition;the control level of sulfur and calcium in molten steel is put forward to ensure the effect of dearsenication. The sulfur content in molten steel must be reduced to less than 0.01%before dearsenicating in LF furnace,the calcium should be higher than 0.0055%after adding Al-Mg-Ca alloy. KEY WORDS residual element:dearsenication:molten steel:arsenic;refine 收稿日期：2020-03-30 基金项目：国家自然科学基金资助项目(51874028)LF 精炼过程砷脱除的工业试验 李文博苣，赵海泉 攀枝花学院钒钛学院，攀枝花 617000 苣通信作者，E-mail: liwenbo315@126.com 摘    要    基于炼钢生产过程中残余元素砷较难脱除的特点，并结合以往实验室热态脱砷研究结果. 通过钢包精炼炉（Ladle furnace refining furnace, LF 炉）钢液脱砷工业试验，研究了 LF 精炼炼钢过程中有关砷的脱除方法. 采用 Al–Mg–Ca 合金作为 脱砷剂，研究发现，LF 炉可以实现钢液精炼脱砷，但钢液精炼过程中硫和钙的含量是实现工业条件下脱砷的限制环节. 因此， 必须控制钢液中硫和钙的含量以保证钢液脱砷效果. LF 炉精炼脱砷之前必须将钢液中的硫含量降至低于 0.01%，加入 Al–Mg–Ca 合金后钢液中钙含量需高于 0.0055%. 关键词    残余元素；脱砷；钢液；砷；精炼 分类号    TF769.2 Industrial experimental study on dearsenication in LF refining process LI Wen-bo苣 ，ZHAO Hai-quan School of Vanadium and Titanium, Panzhihua University, Panzhihua 617000, China 苣 Corresponding author, E-mail: liwenbo315@126.com ABSTRACT    With the gradual depletion of high-grade iron ore resources, the usage amount of low-grade iron ore is increasing year by year. Moreover, given the environmental protection requirements and the objective to reduce industrial cost, the usage of scrap is significantly increasing. The above occurrences have led to a large increase in the percentage of residual elemental arsenic in steel. Also, the requirement for lower arsenic content in finished steel is increasingly stricter. Presently, the iron and steel enterprises have not yet developed a mature technology for dearsenication in molten steel; moreover, the theoretical studies on the dearsenication in molten steel are relatively few, which lead to a lack of relevant theoretical data. Therefore, how to realize an effective method for dearsenication in molten steel is a technical problem in the iron and steel industry. Considering the problems of poor dearsenication in the steelmaking process and the previous experimental results of dearsenication in laboratory. The dearsenication in the process of steelmaking was investigated through an industrial trial of dearsenication in the molten steel in the ladle furnace (LF) refining furnace. The Al–Mg–Ca alloy was chosen as dearseicating agent, The industrial test about dearsenication in the molten steel show: the dearsenication in the molten steel can be realized in the LF furnace, the sulfur and calcium content in the molten steel is restrictive factor for dearsenication under industrial condition; the control level of sulfur and calcium in molten steel is put forward to ensure the effect of dearsenication. The sulfur content in molten steel must be reduced to less than 0.01% before dearsenicating in LF furnace, the calcium should be higher than 0.0055% after adding Al–Mg–Ca alloy. KEY WORDS    residual element；dearsenication；molten steel；arsenic；refine 收稿日期: 2020−03−30 基金项目: 国家自然科学基金资助项目（51874028） 工程科学学报，第 42 卷，增刊 1：83−88，2020 年 12 月 Chinese Journal of Engineering, Vol. 42, Suppl. 1: 83−88, December 2020 https://doi.org/10.13374/j.issn2095-9389.2020.03.20.s02; http://cje.ustb.edu.cn