炼铁流程硫解析及降低硫质量分数措施分析
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摘要
为降低京唐烟气硫排放及解决铁水中硫质量分数偏高的问题,通过计算分析京唐烧结工序、球团工序、高炉工序硫平衡,得到烧结硫负荷来源权重最大为混匀矿,约占带入硫总量的43%(质量分数);球团硫负荷来源权重最大为矿粉,占带入硫总量的98%;高炉硫负荷来源权重最大为燃料,占带入硫总量的94%。根据对每道工序硫分布情况的详尽分析,得到降低京唐烧结、球团、高炉废气及铁水中硫质量分数措施,即减少高硫矿粉(如秘鲁粉、自产加工粉等)的配比和降低燃料中硫质量分数,同时应进一步提高高炉碱度与铁水温度。
By the calculation and the analysis of the sulfur balance in the sintering,the pelletizing,the blast furnace process in Shougang Jingtang,the following conclusions are found. The maximum mass of the sulfur load of sinter is the mixed ore,accounting for about 43% of the total sulfur content,and the maximum mass of the sulfur load of the pellet is ore powder,accounting for up to 98% of the total sulfur content,and the maximum mass of the sulfur load of the blast furnace is fuel,accounting for up to 94% of the total sulfur content. By analyzing the sulfur distribution in each process,the measures for reducing the sulfur content of waste gas in the sintering,the pelletizing,the blast furnace process are obtained,which is reducing the ratio of high sulfur content ore powder(such as Peru powder,self produced powder etc)and reducing the sulfur content in the fuel. At the same time,the alkalinity and the temperature of the hot metal should be further improved.
By the calculation and the analysis of the sulfur balance in the sintering,the pelletizing,the blast furnace process in Shougang Jingtang,the following conclusions are found. The maximum mass of the sulfur load of sinter is the mixed ore,accounting for about 43% of the total sulfur content,and the maximum mass of the sulfur load of the pellet is ore powder,accounting for up to 98% of the total sulfur content,and the maximum mass of the sulfur load of the blast furnace is fuel,accounting for up to 94% of the total sulfur content. By analyzing the sulfur distribution in each process,the measures for reducing the sulfur content of waste gas in the sintering,the pelletizing,the blast furnace process are obtained,which is reducing the ratio of high sulfur content ore powder(such as Peru powder,self produced powder etc)and reducing the sulfur content in the fuel. At the same time,the alkalinity and the temperature of the hot metal should be further improved.
引文
[1]王筱留.钢铁冶金学[M].北京:冶金工业出版社,2000.(WANG Xiao-liu. Metallurgy of Iron and Steel[M]. Beijing:Metallurgical Industry Press,2000.)
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[6]张贺顺,许仁泽,张建良,等.首钢京唐高炉渣脱硫性能研究[J].钢铁研究,2016,44(5):14.(ZHANG He-shun,XU Renze,ZHANG Jian-liang,et al. Study on desulfurization properties of blast furnace slag in Shougang Jingtang United Iron and Steel Co. Ltd.[J]. Iron and Steel Research,2016,44(5):14.)
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[8]翟鑫.烧结球团行业脱硫现状及减排对策研究[J].山东工业技术,2016(10):19.(ZHAI Xin. Study on desulfurization status and emission reduction countermeasures in sinter pelletizing industry[J]. Industrial Technology in Shandong,2016(10):19.)
[9]庄辉,刘长江.京唐1号高炉低燃料比冶炼技术[J].中国冶金,2017,27(10):49.(ZHUANG Hui,LIU Chang-jiang. Low fuel smelting technology of No.1 blast furnace in Jingtang[J]. China Metallurgy,2017,27(10):49.)
[10]黄亚玲,齐凤来,司新,等.唐钢减少二氧化硫排放的生产优化[J].冶金能源,2016,35(5):62.(HUANG Ya-ling,QI Fenglai,SI Xin,et al. Reduce sulfur dioxide emissions of production optimizationin Tangsteel[J]. Energy for Metallurgical Industry,2016,35(5):62.)
[11] Shunji Kasama,Hisatsugu Kitaguchi,Yuichi Yamamura,等.烧结厂烧结废气能见度分析[J].世界钢铁,2012,12(1):15.(Shunji Kasama,Hisatsugu Kitaguchi,Yuichi Yamamura,et al.Analysis of exhaust gas visibility in iron ore sintering plant[J].World Steel,2012,12(1):15.)
[12]周明顺,王义栋,赵东明,等.高硫铁精矿配比对球团工艺参数及性能的影响[J].钢铁,2018,53(5):11.(ZHOU Mingshun,WANG Yi-dong,ZHAO Dong-ming,et al. Effects of adding high-sulfur magnetite concentrate on pelletizing parameters and performance[J]. Iron and Steel,2018,53(5):11.)
[13]刘国平,徐小伟,毛鸣.马钢300 t转炉炼钢系统钢中硫的控制研究与实践[J].钢铁,2011,46(9):29.(LIU Guo-ping,XU Xiao-wei,MAO Ming. Practice and research on sulfur control of 300 t BOF steelmaking process in Masteel[J]. Iron and Steel,2011,46(9):29.)
[2]王筱留.高炉生产知识问答[M].北京:冶金工业出版社,2013.(WANG Xiao-liu. Knowledge and Answer to the Production of Blast Furnace[M]. Beijing:Metallurgical Industry Press,2013.)
[3]朱仁良.宝钢大型高炉操作技术与管理[J].炼铁,2014,33(4):1.(ZHU Ren-liang. Operation technology and management of Baosteel's larege sized blast furnace[J]. Ironmaking,2014,33(4):1.)
[4]周东东,姜曦,周翔. 2016年上半年中国大高炉生产指标浅析[J].中国冶金,2016,26(12):1.(ZHOU Dong-dong,JIANG Xi,ZHOU Xiang. Analyses of production indexes of large blast furnaces in China during first half of 2016[J]. China Metallurgy,2016,26(12):1.)
[5]刘征建,张建良,安钢,等.基于硫平衡计算的低硫烧结原料控制标准[J].北京科技大学学报,2012,34(10):1108.(LIU Zheng-jian,ZHANG Jian-liang,AN Gang,et al. Control criterion of low-sulfur sintering materials based on sulfur balance calculations[J]. Journal of University of Science and Technology Beijing,2012,34(10):1108.)
[6]张贺顺,许仁泽,张建良,等.首钢京唐高炉渣脱硫性能研究[J].钢铁研究,2016,44(5):14.(ZHANG He-shun,XU Renze,ZHANG Jian-liang,et al. Study on desulfurization properties of blast furnace slag in Shougang Jingtang United Iron and Steel Co. Ltd.[J]. Iron and Steel Research,2016,44(5):14.)
[7]高冰,肖洪,张文强,等.高硫焦炭特性及对高炉冶炼的影响[J].炼铁,2017,36(1):56.(GAO Bing,XIAO Hong,ZHANG Wen-qiang,et al. Characteristics of high sulfur coke and its effect on blast furnace smelting[J]. Ironmaking,2017,36(1):56.)
[8]翟鑫.烧结球团行业脱硫现状及减排对策研究[J].山东工业技术,2016(10):19.(ZHAI Xin. Study on desulfurization status and emission reduction countermeasures in sinter pelletizing industry[J]. Industrial Technology in Shandong,2016(10):19.)
[9]庄辉,刘长江.京唐1号高炉低燃料比冶炼技术[J].中国冶金,2017,27(10):49.(ZHUANG Hui,LIU Chang-jiang. Low fuel smelting technology of No.1 blast furnace in Jingtang[J]. China Metallurgy,2017,27(10):49.)
[10]黄亚玲,齐凤来,司新,等.唐钢减少二氧化硫排放的生产优化[J].冶金能源,2016,35(5):62.(HUANG Ya-ling,QI Fenglai,SI Xin,et al. Reduce sulfur dioxide emissions of production optimizationin Tangsteel[J]. Energy for Metallurgical Industry,2016,35(5):62.)
[11] Shunji Kasama,Hisatsugu Kitaguchi,Yuichi Yamamura,等.烧结厂烧结废气能见度分析[J].世界钢铁,2012,12(1):15.(Shunji Kasama,Hisatsugu Kitaguchi,Yuichi Yamamura,et al.Analysis of exhaust gas visibility in iron ore sintering plant[J].World Steel,2012,12(1):15.)
[12]周明顺,王义栋,赵东明,等.高硫铁精矿配比对球团工艺参数及性能的影响[J].钢铁,2018,53(5):11.(ZHOU Mingshun,WANG Yi-dong,ZHAO Dong-ming,et al. Effects of adding high-sulfur magnetite concentrate on pelletizing parameters and performance[J]. Iron and Steel,2018,53(5):11.)
[13]刘国平,徐小伟,毛鸣.马钢300 t转炉炼钢系统钢中硫的控制研究与实践[J].钢铁,2011,46(9):29.(LIU Guo-ping,XU Xiao-wei,MAO Ming. Practice and research on sulfur control of 300 t BOF steelmaking process in Masteel[J]. Iron and Steel,2011,46(9):29.)