Nitrogen dissolution and control of molten steel in steelmaking process
LI Xiao-ming1, XI Hao-dong1, MIAO De-jun1, LIU Jun-bao2, LÜ Ming1
1. School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China; 2. Steelmaking Plant, Laiwu Branch of Shandong Iron and Steel Co., Ltd., Jinan 271104, Shandong, China
Abstract：As a typical coexistence element in steel, the content of nitrogen has an important influence on the properties of steel products. In the process of steelmaking, the nitrogen content in molten steel fluctuates obviously, which leads to unstable properties of finished steel, because the exposed molten steel easily leads to nitrogen increase, or the yield of nitrogen in nitrogen-containing alloy is unstable due to different compositions of molten steel and improper operation. Therefore, the precise control of nitrogen has become a key issue in the production of nitrogen-controlled steel or nitrogen-containing steel. The sources of nitrogen, the thermodynamics and kinetics of nitrogen dissolution in molten steel were analyzed, the changes of nitrogen in molten steel production process, the research status and technical measures of nitrogen control were summarized, and the development direction of precise control of nitrogen in steelmaking process puts forward.
李小明, 席浩栋, 缪德军, 刘俊宝, 吕明. 炼钢流程钢中氮的溶解及控制技术[J]. 钢铁, 2021, 56(10): 36-44.
LI Xiao-ming, XI Hao-dong, MIAO De-jun, LIU Jun-bao, LÜ Ming. Nitrogen dissolution and control of molten steel in steelmaking process[J]. Iron and Steel, 2021, 56(10): 36-44.
[1] Astafurova E,Moskvina V,Maier G,et al. Temperature dependence of tensile deformation and fracture micromechanisms in V-alloyed high-nitrogen steel: Effect of Solution-Treatment Temperature[J]. Procedia Structural Integrity,2018,13:1129. [2] 曹呈祥,崔怀周,梁强,等. Mn18Cr18 N高氮奥氏体不锈钢的冶炼工艺[J]. 中国冶金,2021,31(5): 98.(CAO Cheng-xiang,CUI Huai-zhou,LIANG Qiang,et al. Smelting process of Mn18Cr18 N high nitrogen austenitic stainless steel[J]. China Metallurgy,2021,31(5):98.) [3] 宁小智,邢长军,雍岐龙,等 热拔工艺对高氮无镍奥氏体不锈钢线材开裂的影响[J]. 中国冶金,2020,30(5):47.(NING Xiao-zhi,XING Chang-jun,YONG Qi-long,et al. Influence of hot drawing process on cracking of high nitrogen nickel free austenitic stainless steel wire rod[J]. China Metallurgy,2020,30(5):47.) [4] López D,Alonso Falleiros N,Paulo Tschiptschin A. Effect of nitrogen on the corrosion-erosion synergism in an austenitic stainless steel[J]. Tribology International,2011,44(5):610. [5] ZHAO Han,DUAN Lian,CHEN Guang,et al. High corrosion resistance performance of 304 stainless steel after liquid nitrocarburization[J]. Composites Part B:Engineering,2018,155:173. [6] ZHANG Jing,XIN Wen-bin,LUO Guo-ping,et al. Effect of welding heat input on microstructural evolution,precipitation behavior and resultant properties of the simulated CGHAZ in high-N V-alloyed steel[J]. Materials Characterization,2020,162:110201. [7] 南海,常瑞津,李静媛,等. 氮元素对Cr13超级马氏体不锈钢组织及性能的影响[J]. 钢铁研究学报,2020,32(12):1148.(NAN Hai,CHANG Rui-jin,LI Jing-yuan,et al. Effect of nitrogen on microstructure and properties of Cr13 super martensitic stainless steel[J]. Journal of Iron and Steel Research,2020,32(12):1148.) [8] 曹春磊,张兴中,周俐,等. 新型高氮无镍不锈钢熔炼增氮效果分析[J]. 钢铁研究学报,2013,25(8):16.(CAO Chun-lei,ZHANG Xing-zhong,ZHOU Li,et al. Analysis on nitrogen absorption of new nickel-free high nitrogen stainless steel[J]. Journal of Iron and Steel Research,2013,25(8):16.) [9] 李光强,董廷亮. 高氮钢的基础研究及应用进展[J]. 中国冶金,2007,17(7):5.(LI Guang-qiang,DONG Ting-liang. Progresses on applications and fundamental of high nitrogen steels[J]. China Metallurgy,2007,17(7):5.) [10] 宁鑫,宋志刚,丰涵,等. 氮含量对HPD-1双相不锈钢组织及力学性能的影响[J]. 金属热处理,2020,45(9):210.(NING Xin,SONG Zhi-gang,FENG Han,et al. Effect of nitrogen content on microstructure and mechanical properties of HPD-1 duplex stainless steel[J]. Heat Treatment of Metals,2020,45(9):210.) [11] 姜周华,陈兆平,黄宗泽. 不锈钢冶炼及凝固过程氮的控制[J]. 钢铁,2005,40(3):32.(JIANG Zhou-hua,CHEN Zhao-ping,HUANG Zong-ze. Control of nitrogen in the stainless steel during melting and solidification[J]. Iron and Steel,2005,40(3):32.) [12] 陈均,曾建华,陈永,等. 120 t LD-LF-RH-CC全流程钢水氮含量控制技术研究和工艺实践[J]. 特殊钢,2016,37(2):49.(CHEN Jun,ZENG Jian-hua,CHEN Yong,et al. Study and process practice of control technique of nitrogen content in liquid during 120 t LD-LF-RH-CC whole flowsheet[J]. Special Steel,2016,37(2):49.) [13] 张庆国. 氧含量影响钢液吸氮的理论研究[J]. 炼钢,2003,19(6):25.(ZHANG Qing-guo. Theoretical research on effect of oxygen content in liquid steel on nitrogen absorption[J]. Steelmaking,2003,19(6):25.) [14] ZHOU Cheng-shuang,HONG Yuan-jian,ZHANG Lin,et al. Abnormal effect of nitrogen on hydrogen gas embrittlement of austenitic stainless steels at low temperatures[J]. International Journal of Hydrogen Energy,2016,41(31):13777. [15] 张伯影,田博涵,魏光升. 电弧炉炼钢流程氮含量变化及控制技术新进展[J]. 工业加热,2020,49(6):19.(ZHANG Bo-ying,TIAN Bo-han,WEI Guang-sheng. New process of nitrogen content change and control technology in EAF steelmaking process[J]. Industrial Heating,2020,49(6):19.) [16] 刘彭,隋亚飞,徐刚军,等. 低铁水比下钢水中氮的控制[J]. 钢铁,2019,54(6):121.(LIU Peng,SUI Ya-fei,XU Gang-jun,et al. Control of nitrogen in steel under low hot metal ratio[J]. Iron and Steel,2019,54(6):121.) [17] 王经民,林国强,李京社,等. 电弧炉冶炼工艺对钢液氮含量的影响[J]. 特殊钢,2003(4):51.(WANG Jing-min,LING Guo-qiang,LI Jing-she,et al. Effect of arc furnace operation technology on nitrogen content in molten steel[J]. Special Steel,2003(4):51.) [18] 时彦林,张士宪. 316L超低碳奥氏体不锈钢吹氮合金化的动力学研究和应用[J]. 特殊钢,2017,38(3):28.(SHI Yan-lin,ZHANG Shi-xian. Study on metallurgical kinetics of blowing nitrogen alloying of ultra-low carbon austenite stainless steel 316L and application[J]. Special Steel,2017,38(3):28.) [19] 傅杰. 钢冶金过程动力学[M]. 北京:冶金工业出版社,2001.(FU Jie. Steel Metallurgical Process Dynamics[M]. Beijing:Metallurgical Industry Press,2001.) [20] 李正邦. AOD炉冶炼含氮不锈钢氮成分控制的研究[J]. 钢铁,2007,42(7):18.(LI Zheng-bang. Study of controlling nitrogen content of N-bearing stainless steel during AOD process[J]. Iron and Steel,2007,42(7):18.) [21] 李晶,傅杰,迪林,等. 溶解氧对钢液吸氮影响的研究[J]. 钢铁,2002,37(4):19.(LI Jing,FU Jie,DI Lin,et al. Study on effect of soluble oxygen on nitrogen absorption of liquid steel[J]. Iron and Steel,2002,37(4):19.) [22] 胡晓光. RH精炼过程增氮行为探讨[J]. 中国冶金,2018,28(4):45.(HU Xiao-guang. Discussion on nitrogen increasing behavior in RH refining process[J]. China Metallurgy,2018,28(4):45.) [23] 苏小利,刘文飞. 260 t复吹转炉底吹模式及钢水增氮的研究[J]. 炼钢,2011,27(6):31.(SU Xiao-li,LIU Wen-fei. Study on switch mode about bottom blowing and nitrogen pickup for 260 t top-bottom combined blowing converter[J]. Steelmaking,2011,27(6):31.) [24] 郝鑫,陈振业,白雪莹,等. 高级别管线钢B类夹杂物控制研究[J]. 炼钢,2019,35(3):74.(HAO Xin,CHEN Zhen-ye,BAI Xue-ying,et al. Study on control of B-type inclusion in high grade pipeline steel[J]. Steelmaking,2019,35(3):74.) [25] 李田茂,倪勤盛,刘贺华,等. 钢水氮含量影响因素及控制措施[J]. 鞍钢技术,2015(3):43.(LI Tian-mao,NI Qin-sheng,LIU He-hua,et al. Influencing factors for content of nitrogen in molten steel and controlling measures[J]. Angang Technology,2015(3):43.) [26] 陈均. 半钢冶炼转炉终点钢水氮含量控制技术[J]. 炼钢,2015,31(5):51.(CHEN Jun. Nitrogen control technology of molten steel at the endpoint of semi-steel steelmaking converter[J]. Steelmaking,2015,31(5):51.) [27] 郭凯,杨森祥. 攀钢钒洁净钢生产中氮含量的控制[J]. 钢铁,2014,49(9):44.(GUO Kai,YANG Sen-xiang. Control of nitrogen content in production of clean steel in Panzhihua steel and vanadium[J]. Iron and Steel,2014,49(9):44.) [28] 陆锦祥,王忠英,陈水盛,等. 100 t BOF-LF-RH-CC工艺冶炼结构钢时钢中氮的行为及控制[J]. 特殊钢,2009,30(6):26.(LU Jin-xiang,WANG Zhong-ying,CHEN Shui-sheng,et al. Behavior and control of nitrogen in structural steels steelmaking by 100 t BOF-LF-RH-CC process[J]. Special Steel,2009,30(6):26.) [29] 李勇. 炼钢过程中钢水氮含量控制[J]. 钢铁,2010,45(10):52.(LI Yong. Control of nitrogen content in liquid steels during steelmaking process[J]. Iron and Steel,2010,45(10):52.) [30] 薛正良,吴映江,吴丽嘉,等. BOF-LF-RH-CC流程钢液增氮控制研究[J]. 武汉科技大学学报,2011,34(2):86.(XUE Zheng-liang,WU Ying-jiang,WU Li-jia,et al. Control of nitrogen absorption in BOF-LF-RH-CC steelmaking process[J]. Journal of Wuhan University of Science and Technology,2011,34(2):86.) [31] Nyssen M W,Pistorius P C. Nitrogen in SL/RN direct reduced iron:Origin and effect on nitrogen control in EAF steelmaking[J]. Ironmaking and Steelmaking,2012,39(5):336. [32] 傅杰,唱鹤鸣,迪林,等. 钢液真空脱氮动力学研究[J]. 钢铁,2000,35(10):24.(FU Jie,CHANG He-ming,DI Lin,et al. Study on kinetics of nitrogen removal from liquid steel under vacuum[J]. Iron and Steel,2000,35(10):24.) [33] XING Li-dong,GUO Jian-long,LI Xin,et al. Control of TiN precipitation behavior in titanium-containing micro-alloyed steel[J]. Materials Today Communications,2020,25:101292. [34] 邹勇,孙铭山. 85 t VOD精炼超纯铁素体不锈钢的脱氮工艺及效果[J]. 特殊钢,2009,30(6):39.(ZOU Yong,SUN Ming-shan. Denitriding process for ultra-pure ferrite stainless steel in 85 t VOD refining and its effect[J]. Special Steel,2009,30(6):39.) [35] 冯聚和,魏国增,常金宝,等. 洁净钢生产中氮含量的控制[J]. 河北理工大学学报(自然科学版),2009,31(4):14.(FENG Ju-he,WEI Guo-zeng,CHANG Jin-bao,et al. Control of nitrogen content in the production of pure steel[J]. Journal of Hebei Institute of Technology(Natural Science),2009,31(4):14.) [36] 迟云广,邓志银,朱苗勇. 泡沫渣对120 t转炉钢液脱氮的影响[J]. 特殊钢,2017,38(2):40.(CHI Yun-guang,DENG Zhi-yin,ZHU Miao-yong. Effect of foaming slag on removal of nitrogen in liquid during 120 t BOF steelmaking process[J]. Special Steel,2017,38(2):40.) [37] 朱立新,蒋晓放,许春雷. 宝钢纯净钢生产技术进展[J]. 钢铁,2000,35(11):15.(ZHU Li-xin,JIANG Xiao-fang,XU Chun-lei. Development of production technology of clean steel at Baosteel[J]. Iron and Steel,2000,35(11):15.) [38] 胡蒙均,李法兴,赵俊学,等. 50 t EAF-LF(VD)-CC流程冶炼轴承钢的氮含量控制[J]. 特殊钢,2006(4):53.(HU Meng-jun,LI Fa-xing,ZHAO Jun-xue,et al. Control of nitrogen content in bearing steel steelmaking by a 50 t EAF-LF(VD)-CC flowsheet[J]. Special Steel,2006(4):53.) [39] 黄德胜,杨森祥,李桂军. LF精炼过程氮含量控制技术与实践[J]. 炼钢,2012,28(2):14.(HUANG De-sheng,YANG Sen-xiang,LI Gui-jun. Technology of nitrogen regulation in steel during LF process and its practice[J]. Steelmaking,2012,28(2):14.) [40] 苏利川,李朋欢,吴辉强,等. LF精炼过程钢液氮含量控制[J]. 炼钢,2015,31(1):52.(SU Li-chuan,LI Peng-huan,WU Hui-qiang,et al. Controlling of nitrogen content in molten steel during LF refining[J]. Steelmaking,2015,31(1):52.) [41] 王海兵. 92 t EAF-LF冶炼20G钢液的氮含量控制[J]. 特殊钢,2005,26(6):59.(WANG Hai-bing. Control of nitrogen content in molten steel 20G melted by a 92 t EAF-LF process[J]. Special Steel,2005,26(6):59.) [42] 杜和平,杨志才. 150 t钢包炉(LF)精炼过程控制钢水增氮的工艺实践[J]. 特殊钢,2015,36(1):25.(DU He-ping,YANG Zhi-cai. Process practice on control of nitrogen pick-up in molten steel during 150 t ladle furnace(LF) refining process[J]. Special Steel,2015,36(1):25.) [43] 王经民,于小方,李晶,等. LF/VD过程钢液氮含量控制试验研究[J]. 炼钢,2003(4):56.(WANG Jing-min,YU Xiao-fang,LI Jing,et al. Study on control of nitrogen content in liquid steel in LF/VD[J]. Steelmaking,2003(4):56.) [44] 周世祥,傅杰,王平. EAF-LF-VD-WF-CC工艺生产低氮钢技术[J]. 特殊钢,1998(1):1.(ZHOU Shi-xiang,FU Jie,WANG Ping. Technology of producing low nitrogen steel by EAF-LF-VD-WF-CC process[J]. Special Steel,1998(1):1.) [45] 郭志强,颜学勇,胡守才. 70 t BOF-LF-VD-CC流程转炉钢氮含量控制的工艺实践[J]. 特殊钢,2013,34(6):26.(GUO Zhi-qiang,YAN Xue-yong,HU Shou-cai. Practice of process for control of nitrogen content in converter steel melting by 70 t BOF-LF-VD-CC flow sheet[J]. Special Steel,2013,34(6):26.)[46] 范鼎东. LF-VD钢包精炼炉脱氮工艺[J]. 特殊钢,2000,21(3):46.(FAN Ding-dong. Denitriding process of LF-VD refining ladle furnace[J]. Special Steel,2000,21(3):46.) [47] 王世俊,周云,章华兵,等. 熔渣中BaO和TiO2对钢液氮含量的影响[J]. 钢铁研究学报,2007(8):11.(WANG Shi-jun,ZHOU Yun,ZHANG Hua-bing,et al. Effect of BaO and TiO2 content in molten slag on nitrogen content in liquid steel[J]. Journal of Iron and Steel Research,2007(8):11.) [48] 黄小东,戴逸,廖直友,等. 渣中BaO和TiO2在真空下对钢液氮含量的影响[J]. 连铸,2007(2):19.(HUANG Xiao-dong,DAI Yi,LIAO Zhi-you,et al. Effect of BaO and TiO2 in slag on nitrogen content in liquid steel under vacuum condition[J]. Continuous Casting,2007(2):19.) [49] 周德光,罗伯钢,曾立,等. 钢中氮的控制及其对质量的影响[J]. 炼钢,2005,21(1):43.(ZHOU De-guang,LUO Bo-gang,ZENG Li,et al. Control of nitrogen in steel and its effect on quality of steel[J]. Steelmaking,2005,21(1):43.) [50] 邱国兴,战东平,姜周华,等. SG45VCM钢LF+VD精炼吹氮合金化研究[J]. 上海金属,2016,38(2):41.(QIU Guo-xing,ZHAN Dong-ping,JIANG Zhou-hua,et al. Alloying of the SG45VCM steel by blowing nitrogen with LF+VD refining[J]. Shanghai Metals,2016,38(2):41.) [51] 刘立,赵俊学,李凯,等. EAF→LF(VD)→CC流程生产GCr15轴承钢氮含量分析[J]. 炼钢,2010,26(1):32.(LIU Li,ZHAO Jun-xue,LI Kai,et al. Analysis of nitrogen content in produce the bearing steel GCr15 by UHP-EAF-LF(VD)-CC process[J]. Steelmaking,2010,26(1):32.)
2021, Vol. 56 
