大型转炉高效率、长寿命顶底复合吹炼技术

doi:10.13228/j.boyuan.issn0449-749x.20190308

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (5020 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Through summarizing and the analysis of characteristics of the steelmaking process,the reasonable high efficiency and long-life combined blowing mechanism and choice were proposed. Laboratory experiments and research of slagging and element oxidation mechanisms were carried out to adapt the high efficiency refining control technique,in which the slagging characteristics and elements selective oxidation during blowing were estimated. The result showed that when the oxygen blowing intensity increased from 3.50 to 3.72 m³/(t·min),the refining dynamics demand of all periods can be satisfied eventually. When the bottom blowing intensity increased to 0.2 m³/(t·min).To assure combined blowing metallurgical results,the bottom blowing intensity and the flow pattern were vital,in which bottom blowing intensity,bottom tuyere type,bottom tuyere number,bottom blowing pattern and maintenance technique were the key influencing factors. Finally,a high efficiency and long-life combined blowing technology was constructed by combining the refining mechanism,dynamics requirement,and oxidizability control. After 10 years of practice, the effect was confirmed with a commercial 300 t converter. The reasonable results showed that the final w([C])·w([O]) product reduced to less than 0.001 5,the campaign with good result increased to 7 333,and the efficiency has been increased obviously.

Key words： combined blowing big converter highly efficiency dephosphorization bottom maintenance carbon oxygen product

Received: 09 July 2019

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	YANG Li-bin
	ZENG Jia-qing
	DENG Yong
	XU Xiao-wei
	WU Li-ping

Cite this article:

YANG Li-bin,ZENG Jia-qing,DENG Yong等. Highly efficiency and long-life combined blowing technology of big converter[J]. Iron and Steel, 2020, 55(4): 45-52.

URL:

http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20190308 OR http://www.chinamet.cn/Jweb_gt/EN/Y2020/V55/I4/45

[1] 刘浏,兰德年,萧忠敏. 中国炼钢技术的发展、创新与展望[J]. 炼钢,2007(2):4.(LIU Liu,LAN De-nian, XIAO Zhong-min. Development,innovation and prospect steel-making technology in China[J]. Steelmaking,2007(2):4.)
[2] 曾加庆,潘贻芳,王立平,等. 对复吹转炉低成本、高效化生产洁净钢水理论与实践的再认识[J]. 钢铁,2014,49(10):1.(ZENG Jia-qing,PAN Yi-fang,WANG Li-ping,et al. Further understanding of theories and practice for low-cost and high-efficient clean steel production by combined blowing converter[J]. Iron and Steel,2014,49(10):1.)
[3] 殷瑞钰. 关于高效率低成本洁净钢平台的讨论——21世纪钢铁工业关键技术之一[J]. 炼钢,2011(1):5.(YIN Rui-yu. Discussion on high efficient and low cost clean steel production platform:One of the key technologies for steel industry in 21st century[J]. Steelmaking,2011(1):5.)
[4] 刘浏. 如何建立高效低成本洁净钢平台[J]. 钢铁,2010,45(1):1.(LIU Liu. A proposal to establish a platform for manufacturing high-efficiency and low-cost clean steel[J]. Iron and Steel,2010,45(1):1.)
[5] 殷瑞钰. 新世纪炼钢科技进步回顾与“十二五”展望[J]. 炼钢,2012(5):5.(YIN Rui-yu. Review of progress of steelmaking technology in the first decade of the new century and outlook in the “12th five-year development” period[J]. Steelmaking,2012(5):5.)
[6] 曾加庆,杨利彬,王杰. 底吹搅拌对复吹转炉脱磷工艺的作用分析[J]. 钢铁,2017,52(6):41.(ZENG Jia-qing,YANG Li-bin,WANG Jie. Effect of bottom blowing on dephosphorization technology in combined blowing converter[J]. Iron and Steel,2017,52(6):41.)
[7] 刘浏. 炼钢重大技术装备国产化现状及对策[J]. 中国冶金,2000,10(2):19.(LIU Liu. The current situation and Countermeasures of the localization of major technical equipment for steelmaking[J]. China Metallurgy, 2000,10(2):19.)
[8] 余志祥. 大型转炉炼钢新技术系统开发、创新与应用[J]. 中国冶金,2003,13(3):9.(YU Zhi-xiang. Development,innovation and application of new technology system for large converter steelmaking[J]. China Metallurgy,2003,13(3):9.)
[9] YANG L B,LIU L,WU L P. Study on long campaign combined blowing steelmaking technique of 300 t converter[C]//Proceedings of the 5th Korea-China Joit Symposium on Advanced Steel Technology for Future Industry. Inner Mongolia:The Chinese Society for Metal,2009:16.
[10] 曲英. 炼钢学原理[M]. 北京:冶金工业出版社,1980.(QU Ying. Principles of Steelmaking[M]. Beijing: Metallurgical Industry Press,1980.)
[11] 萬谷志郎. 鉄鋼製錬(金属化学入門シリーズ第2 巻) [M].仙台:丸善株式会社,2000.(Mantani Shiro. Ferrous Process Metallurgy (Introduction to Metal Chemistry) [M]. Sendai City:Marushan Co.,Ltd.,2000.)
[12] 北村信也,水上義正, 金子敏行. 溶銑予備処理を用いた効率的な量産製鋼プロセスの確立[J]. 鐵と鋼,1990,76 (11):1805.(Shin-ya Kitamura,Yoshimasa Mizukami,Toshiyuki Kaneko,et al. Establishment of steel making process with high productivity and high efficiency by use of hot metal pretreatment[J]. Tetsu-to-Hagané,1990,76(11):1805.)
[13] Kishimoto Y,Kato Y,Sakuraya T. Recent progress of top and bottom blown converters at Kawasaki Steel Corporation[J]. Kawasaki Steel Giho,1989,21(3):168.
[14] 潘秀兰,王艳红,郭艳玲. 国内外转炉炼钢技术的新进展[J]. 鞍钢技术,2004(6):1. (PAN Xiu-lan, WANG Yan-hong, GUO Yan-ling. New progress of converter steelmaking technology at home and abroad[J]. Angang Technology,2004(6):1.)
[15] 岸本康夫,齊藤敬高. 我が国における複合転炉の開発,発展の歴史と今後の展望[J]. 鐵と鋼,2014, 100(4):13.(Yasuo Kishimoto, Noritaka Saito. Development and prospect of combined blowing converter in Japan[J]. Tetsu-to-Hagané,2014,100(4):13.)
[16] 甲斐幹,大河平和男. 上底吹き転炉の冶金反応特性に対する鋼浴攪拌強さの影響[J]. 鐵と鋼,1982,68(14):1946.(Tsuyoshi Kai,Kazuo Okohira. Influence of bath agitation intensity on metallurgical characteristics in top and bottom blown converter[J]. Tetsu-to-Hagané,1982,68(14):1946.)
[17] WEI J H,MA J C,FAN Y Y,et al. Back-attack phenomena of gas jets with submerged horizontally blowing and effects on erosion and wear of refractory lining[J]. ISIJ International,1999,39(8):779.
[18] Hans-Jürgen Odenthal,Udo Falkenreck,Jochen Schlüter. CFD simulation of multiphase melt flows in steelmaking converters[C]//European Conference on Computational Fluid Dynamics ECCOMAS CFD 2006. Los Angeles:ECCOMAS,2006.
[19] 杨利彬. 转炉冶炼过程脱磷分析[C]//第十九届(2016年)全国炼钢学术会议大会报告及论文摘要集. 长沙:中国金属学会,2016:75.(YANG L B. Dephosphorization analysis of converter smelting process[C]//Report and Abstracts of the 19th (2016) National Conference on Steelmaking. Changsha:The Chinese Society for Metal,2016:75.)
[20] 佟溥翘,赵进宣,郑丛杰,等. 复吹转炉环缝式底吹供气元件的开发及应用[C]//第七届(2009)中国钢铁年会. 北京:中国金属学会,2009:3894.(TONG Pu-qiao,ZHAO Jin-xuan,ZHENG Cong-jie,et al. Exploitation and practice of annular gap bottom blowing elements in combined-blowing converter[C]//The 7th (2009) China Steel Annual Conference. Beijing:The Chinese Society for Metal,2009:3894.)
[21] 焦兴利,杨利彬. 300 t 转炉长寿复吹工艺研究与应用[J]. 钢铁研究学报,2012,24(12):28.(JIAO Xing-li,YANG Li-bin. Research and application of long life combined blowing process for 300 t converter[J]. Journal of Iron and Steel Research,2012,24 (12):28.)
[22] 谭明祥,林东,彭飞,等.复吹转炉底吹透气性维护技术研究[J]. 钢铁,2005,40(12):25.(TAN Ming-xiang,LIN Dong,PENG Fei,et al. Research on maintenance technology of bottom blowing permeability of combined blowing converter[J]. Iron and Steel,2005,40(12):25.)
[23] 刘浏,佟溥翘,崔淑贤. 长寿复吹转炉工艺技术开发 [J]. 钢铁,2002,37(10):13.(LIU Liu,TONG Pu-qiao,CUI Shu-xian. Development technology of long campaign combined blown converter[J]. Iron and Steel, 2002,37(10):13.)
[24] 方宇荣,黄标彩,赖兆奕. 复吹转炉单炉新双渣法脱磷工艺研究与应用[J]. 炼钢,2014,30(3):22.(FANG Yu-rong,HUANG Biao-cai,LAI Zhao-yi,et al. Research and application on dephosphorization pretreatment process in a single converter new double-slag process[J]. Steelmaking,2014,30(3):1.)
[25] 王杰,曾加庆,杨利彬. 复吹转炉少渣脱磷炼钢工艺过程分析[J]. 炼钢,2015,31(3):31.(WANG Jie, ZENG Jia-qing,YANG Li-bin,et al. Theoretical analysis and trial experiments on combined blown converter less slag dephosphorization steelmaking process[J]. Steelmaking,2015,31(3):31.)