外加电场作用下钢液无污染脱氧工艺
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摘要
为了探索不同外加电场及电极对钢液无污染脱氧的影响,基于电化学反应机理设计制作了适用于工业试验的外加电场钢液净化精炼装置,并开展了相应的数值模拟及工业试验研究。研究表明,在熔渣与钢液间施加外加电场,能有效进行电化学脱氧,最快脱氧速率可达0.001 86%/min。任何增大氧离子传质系数和增大渣金反应面积的方法都可增大渣金间氧离子电流,提高脱氧反应速率。此方法是一种全新的绿色、环保洁净钢精炼工艺,具有十分广阔的应用前景。
In order to explore the influence of various applied electric fields and electrodes on the unpolluted deoxidization of molten steel,a new deoxidization system for commercial experiment and numerical simulation has been designed and fabricated based on the mechanism of electrochemical reaction. And the unpolluted deoxidization technique has been studied when a DC field was applied between the metal and slag. The results show that electrochemical deoxidization can be carried out effectively with the application of electric field at the interface between metal and slag. The maximum deoxidization rate could reach 0.001 86%/min. Both increasing the mass transfer coefficient of oxygen ions and the reaction area of the metal and the slag could increase the oxygen ion current between the steel and slag,so the deoxidization rate could be improved. This technology is new kind of green and environmental steel refining process,which has broad application prospects.
In order to explore the influence of various applied electric fields and electrodes on the unpolluted deoxidization of molten steel,a new deoxidization system for commercial experiment and numerical simulation has been designed and fabricated based on the mechanism of electrochemical reaction. And the unpolluted deoxidization technique has been studied when a DC field was applied between the metal and slag. The results show that electrochemical deoxidization can be carried out effectively with the application of electric field at the interface between metal and slag. The maximum deoxidization rate could reach 0.001 86%/min. Both increasing the mass transfer coefficient of oxygen ions and the reaction area of the metal and the slag could increase the oxygen ion current between the steel and slag,so the deoxidization rate could be improved. This technology is new kind of green and environmental steel refining process,which has broad application prospects.
引文
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[13]德国钢铁工程师协会.渣图集[M].王俭,毛裕文,译.北京:冶金工业出版社,1987:171.(German Steel Engineers Association.Slag Atlas[M].WANG Jian,MAO Yu-wen,Translation.Beijing:Metallurgical Industry Press,1987:171.)
[14]李文超.冶金与材料物理化学[M].北京:冶金工业出版社,2001.(LI Wen-chao.Physical Chemistry of Metallurgy and Materials[M].Beijing:Metallurgical Industry Press,2001.)
[15]郭庆涛,贾吉祥,廖相巍,等.外加直流电场无污染脱氧模拟研究[J].鞍钢技术,2014(2):24.(GUO Qing-tao,JIA Jixiang,LIAO Xiang-wei,et al.Simulation study on deoxidization method with no pollution under direct current electric field[J].Angang Technology,2014(2):24.)
[2]马焕珣,王新华,黄福祥,等.脱氧工艺对低碳铝镇静钢洁净度的影响[J].钢铁,2016,51(1):19.(MA Huan-xun,WANG Xin-hua,HUANG Fu-xiang,et al.Effect of deoxidation technology on cleanliness of low carbon aluminum killed steel[J].Iron and Steel,2016,51(1):19.)
[3]Shi Yuan,Uday Pal,Kuo C Chou.Deoxidization of molten metals by short circuiting yttria-stabilized zirconia electrolyte cell[J].Electrochem Soc,1994,141(2):467.
[4]Iwase M,Tanida M,Mclean A,et al.Electronically driven transport of oxygen from liquid iron to CO+CO2gas mixtures through stabilized zirconia[J].Metal Trans:B,1981,12(9):517.
[5]胡晓军,肖莉,李福燊,等.一种无污染脱氧方法[J].金属学报,1999,35(3):316.(HU Xiao-jun,XIAO Li,LI Fu-shen,et al,An unpolluted deoxidation way[J].Acta Metallrugica Sinica,1999,35(3):316.)
[6]周国治,李福燊.一种无污染脱氧体:CN1187542A[P/OL].1998-7-15.http://industry.wanfangdata.com.cn/yj/Detail/Patent?id=Patent_CN97116954.3&type=Free.(ZHOU Guo-zhi,LI Fu-shen.An Unpolluted Deoxidation Object:CN1187542A.1998-7-15.http://industry.wanfangdata.com.cn/yj/Detail/Patent?id=Patent_CN97116954.3&type=Free.)
[7]周国治,李福燊,鲁雄刚,等.冶金过程新方向的探索——可控氧流冶金学[M]//魏寿昆院士百岁寿辰纪念文集.北京:科学出版社,2006:171.(ZHOU Guo-zhi,LI Fu-shen,LU Xionggang,et al.To explore new directions of metallurgical process—Controlled oxygen flow metallurgy[M]//WEI Shou-kun Academy 100th Birthday Festschrift.Beijing:Science Press,2006:171.)
[8]高运明,姜英,张华,等.可控氧流冶金[J].武汉科技大学学报:自然科学版,2007,30(5):449.(GAO Yun-ming,JIANG Yin,ZHANG Hua,et al.Metallurgy with controlled oxygen flow[J].Journal of Wuhan University of Science and Technology:Natural Science Edition,2007,30(5):449.)
[9]高运明,郭兴敏,周国治.熔渣中氧传递机理的研究[J].钢铁研究学报,2004,16(4):1.(GAO Yun-ming,GUO Xing-min,ZHOU Guo-zhi.Transport mechanism of oxygen in molten slags[J].Journal of Iron and Steel Research,2004,16(4):1.)
[10]鲁雄刚,丁伟中,李福燊,等.渣中氧离子传输电化学机理[J].中国有色金属学报:英文版,2002,12(2):326.(LU Xionggang,DING Wei-zhong,LI Fu-shen,et al.Electrochemistry of oxygen iron transport in slag[J].The Chinese Journal of Nonferrous Metals,2002,12(2):326.)
[11]鲁雄刚,梁小伟,袁威,等.渣金间外加电场无污染脱氧方法的研究[J].金属学报,2005,41(2):113.(LU Xiong-gang,LIANG Xiao-wei,YUAN Wei,et al.Study of unpolluted deoxidization method with applied voltage between metal and slag[J].Acta Metallurgica Sinica,2005,41(2):113.)
[12]贾吉祥,廖相巍,赵刚,等.外加电场钢液无污染脱氧新方法[J].炼钢,2012,28(4):47.(JIA Ji-xiang,LIAO Xiang-wei,ZHAO Gang,et al.Research on pollution free hot metal deoxidization method by externally applied electric field[J].Steelmaking,2012,28(4):47.)
[13]德国钢铁工程师协会.渣图集[M].王俭,毛裕文,译.北京:冶金工业出版社,1987:171.(German Steel Engineers Association.Slag Atlas[M].WANG Jian,MAO Yu-wen,Translation.Beijing:Metallurgical Industry Press,1987:171.)
[14]李文超.冶金与材料物理化学[M].北京:冶金工业出版社,2001.(LI Wen-chao.Physical Chemistry of Metallurgy and Materials[M].Beijing:Metallurgical Industry Press,2001.)
[15]郭庆涛,贾吉祥,廖相巍,等.外加直流电场无污染脱氧模拟研究[J].鞍钢技术,2014(2):24.(GUO Qing-tao,JIA Jixiang,LIAO Xiang-wei,et al.Simulation study on deoxidization method with no pollution under direct current electric field[J].Angang Technology,2014(2):24.)