大型转炉双角度氧枪喷头高供氧强度炼钢

doi:10.13228/j.boyuan.issn0449-749x.20210048

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摘要为了把宝钢炼钢厂300 t转炉的氧流量由60 000 提高到69 000 m³/h,设计了6孔双角度氧枪喷头。根据第一个双角度喷头的试验结果,结合实验室内进行的氧枪喷头射流流场测定、射流与熔池作用的水模研究,对喷头设计进行了改进。为制定正确的供氧制度和喷头设计,对宝钢一炼钢的管道压力损失进行了测定。经过优化的3号6孔双角度喷头的主要参数为,氧流出口马赫数Ma≥2.1,小角度喷孔的氧流量不低于总供氧流量的57%,大角度喷孔夹角不小于13°,小角度喷孔夹角为10°左右。利用3号6孔喷头炼钢效果为,氧流量为69 000 m³/h,吹氧时间平均缩短2.0 min/炉,脱磷率平均为87.5%,氧枪喷头寿命平均为190次。通过这次研究工作掌握了大型转炉高供氧强度3.833 m³/(t·min)吹炼的双角度6孔喷头设计制作和吹炼操作技术。

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	蒋晓放
	杨文远
	吴亚明
	王明林
	李洪涛
	胡砚斌

关键词 ：转炉炼钢, 供氧强度, 氧气流量, 氧枪喷头, 冶金效果

Abstract：In order to increase the oxygen flow rate of the 300 t converter in Baosteel's steelmaking plant from 60 000 to 69 000 m³/h, a 6-hole dual-angle oxygen lance nozzle was designed. Based on the test results of the first dual-angle nozzle, combined with the measurement of the jet flow field of the oxygen lance nozzle in the laboratory, and the water model study of the effect of the jet and the molten bath, the nozzle design was improved. In order to formulate the correct oxygen supply system and nozzle design, the pipeline pressure loss of Baosteel No.1 Steelmaking Plant was measured. The main parameters of the optimized No.3 6-hole dual-angle nozzle are, oxygen outlet Mach number Ma≥2.1, the oxygen flow of the small-angle nozzle is larger than 57% of the total oxygen flow, and the angle of the large-angle nozzle is larger than 13°, the angle of the small-angle nozzle is about 10°. The effect of steelmaking with No.3 6-hole nozzle is, oxygen flow rate is 69 000 m³/h, oxygen blowing time is shortened by 2.0 min/ch on average, dephosphorization rate is 87.5% on average, and oxygen lance nozzle life is 190 times on average. Through this research work, we have mastered the design and manufacture of the dual-angle 6-hole nozzle for high oxygen intensity blowing (3.833 m³/(t·min)) and the blowing operation technology of the large converter.

Key words： converter steelmaking oxygen supply intensity oxygen flow oxygen lance nozzle metallurgical effect

收稿日期: 2021-01-25

引用本文:

蒋晓放, 杨文远, 吴亚明, 王明林, 李洪涛, 胡砚斌. 大型转炉双角度氧枪喷头高供氧强度炼钢[J]. 钢铁, 2021, 56(9): 62-73. JIANG Xiao-fang, YANG Wen-yuan, WU Ya-ming, WANG Ming-lin, LI Hong-tao, HU Yan-bin. High oxygen supply intensity steelmaking with dual-angle oxygen lance nozzle in large converter[J]. Iron and Steel, 2021, 56(9): 62-73.

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[1] Tanaka Y, Asahara N, Maruo R, et al. Improvement of the efficiency of multi-refining converter (MURC) process at steelmaking shop in Yawata works[C]//AISTech 2016 Proceedings. Pittsburgh: Association for Iron and Steel Technology,2016: 945.
[2] 岩崎正树, 松尾充高. 制钢技术开发的展望[J]. 新日铁技报, 2011(391): 88. (Iwasaki M, Matsuo M. Change and development of steelmaking technology[J]. Nippon Steel Technical Report, 2011(391): 88.)
[3] Toshiyuki U, Kiyohito F, Noriaki Y, et al. High productivity operation technology of Wakayama steelmaking shop[C]//Proceeding of the 10^th China-Japan Symposium on Science and Technology of Iron and Steel. Tokyo: The Iron and Steel Institute of Japan, 2004: 116.
[4] 杨文远, 干勇, 王明林. 氧气转炉高磷铁水炼钢及鄂西高磷矿的利用[J]. 中国冶金,2011, 21 (3):4. (YANG Wen-yuan, GAN Yong, WANG Ming-lin. Steelmaking with high-phosphorus hot metal in BOF and the use iron ore resources with high phosphorus[J]. China Metallurgy, 2011, 21 (3): 4.)
[5] 杨文远, 蒋晓放, 王明林, 等. 大型转炉炼钢工艺参数优化的研究[J]. 钢铁, 2010, 45 (10): 27. (YANG Wen-yuan, JIANG Xiao-fang, WANG Ming-lin, et al. Technical parameters optimization of steelmaking in large converter[J]. Iron and Steel, 2010, 45 (10): 27.)
[6] 杨利彬, 曾加庆, 邓勇, 等. 大型转炉高效率、长寿命顶底复合吹炼技术[J]. 钢铁, 2020, 55(4): 45. (YANG Li-bin, ZENG Jia-qing, DENG Yong, et al. Highly efficiency and long-life combined blowing technology of big converter[J]. Iron and Steel, 2020, 55(4): 45.)
[7] Lee C K, Neilson J H, Gilchrist. Effects of nozzle angle on performance of multi-nozzle lance in steel converters[J]. Ironmaking and Steelmaking, 1977(6): 329.
[8] Denier G, Grosjean J C, Barbotin J P, et al. Industrial development of LBE process[J]. Review of Metallurgy-CIT, 1981 (3): 213.
[9] Henrion R, Denier G. Inert gas stirring in a BOF[J]. I de SM, 1984(8): 11.
[10] 蒋晓放, 陈向东, 牟济宁, 等. 宝钢300吨转炉复吹技术的优化与改进[C]//2016年全国炼钢连铸生产技术会论文集. 银川:中国金属学会, 2016: 8.(JIANG Xiao-fang, CHEN Xiang-dong, MOU Ji-ning, et al. Optimization and improvement of 300 t converter combined blowing technology at Baosteel[C]//Proceedings of the 2016 China Steelmaking and Continuous Casting Production Technology Conference. Yinchuan: The Chinese Society for Metals, 2016: 8.)
[11] 费鹏. 大型转炉底枪“可视化”工艺研究与实践[C]//2016年全国炼钢连铸生产技术会论文集. 银川:中国金属学会, 2016: 34. (FEI peng. Practice of bottom-blowing tuyeres visualization process of large scale BOF in Angang Steel Co., Ltd.[C]//Proceedings of the 2016 China Steelmaking and Continuous Casting Production Technology Conference. Yinchuan: The Chinese Society of Metals, 2016: 34)
[12] CUI Jian, YANG Wen-yuan. Slag splashing for Baosteel's 300 metric ton and crystallographic structure of its slag[J]. Iron and Steelmaker, 2000(7): 39.
[13] 杨文远, 吴文东, 王明林, 等. 大型转炉低硅铁水高效吹炼的研究[J]. 钢铁研究学报, 2006, 18 (12): 10. (YANG Wen-yuan, WU Wen-dong, WANG Ming-lin, et al. High efficient blow of low silicon hot metal in large converter[J]. Journal of Iron and Steel Research, 2006, 18 (12): 10.)
[14] 杨文远, 崔淑贤, 郑丛杰, 等. 转炉溅渣护炉的炉渣控制及炉衬侵蚀机理[J]. 钢铁研究学报, 1999, 11(5): 11. (YANG Wen-yuan, CUI Shu-xian, ZHENG Cong-jie, et al. Slag control and lining erosion mechanism for slag splashing in BOF[J]. Journal of Iron and Steel Research, 1999, 11(5):11.)
[15] 杨文远, 王明林, 崔淑贤. 炉渣的岩相研究在转炉炼钢中的应用[J]. 钢铁研究学报, 2007, 19(12): 10. (YANG Wen-yuan, WANG Ming-lin, CUI Shu-xian. Application of mineralogical morphology to converter steelmaking[J]. Journal of Iron and Steel Research, 2007, 19(12): 10.)
[16] 何顺生, 杨文远, 李任春, 等. 邯宝大型转炉炼钢工艺优化的研究[J]. 炼钢, 2019, 35(5): 16. (HE Shun-sheng, YANG Wen-yuan, LI Ren-chun, et al. Research on optimization of steelmaking process for large converter in Hanbao steel[J]. Steelmaking, 2019, 35(5): 16.)
[17] Naito K I,Ogawa Y. Inomoto T, et al. Characteristics of jets from top-blown lance in converter[J]. ISIJ International, 2000, 40(1): 23.
[18] Pehlke R D, Porter W F, Urban R F. BOF Steelmaking (Volume Three Design) [M]. New York: The Iron and Steel Society of AIME, 1976.
[19] Remery A, Wittmann. Vitesses limites les reseaux D'Oxygene[J]. Revue de Métallurgie-CIT, 1983(4): 337.
[20] Flinn R A, Pehlke R D. Jet penetration and bath circulation in the basic oxygen furnace[J]. Transaction of AIME, 1967, 239: 1776.
[21] 甲斐幹, 大河平和男, 樋口満雄, 等. 上底吹き転炉特性のコールドモデルにょる検討[J]. 鉄と鋼, 1983, 18(2): 42.
[22] Gaye H. Vitesse De Fusion Des Ferrailles Au Convertiseer[J]. Revue de Métallurgie-CIT, 1986(11): 793.
[23] 杨文远, 张先贵, 吕英华, 等. 转炉供氧参数对喷溅的影响[J]. 钢铁, 2012, 47 (11): 32. (YANG Wen-yuan, ZHANG Xian-gui, LÜ Ying-hua, et al. Effect of oxygen supply on splashing of BOF[J]. Iron and Steel, 2012, 47 (11): 32.)
[24] 杨文远, 冯超, 王明林, 等. 大型转炉高供氧强度吹炼的水模实验[J]. 钢铁研究学报, 2017, 29(10): 807. (YANG Wen-yuan, FENG Chao, WANAG Ming-lin, et al. Water model experiment of high supplying oxygen blowing in large converter[J]. Journal of Iron and Steel Research, 2017, 29 (10): 807.)
[25] 姜丽梅,王亮亮.高磷IF钢结晶器液面波动原因分析与控制[J].连铸,2018 (1):8.(JIANG Li-mei, WANG Liang-liang. Analyzation and control of mold level fluctuation of IFsteel with high P content in a slab continuous caster[J]. Continuous Casting,2018 (1):8.)
[26] 袁纲,杨枝超,唐树平,等.镀锡板夹杂缺陷分析及控制[J].连铸,2020(6):62.(YUAN Gang, YANG Zhi-chao, TANG Shu-ping, et al.Analysis and control of inclusion defectsof tinplate steel slab[J]. Continuous Casting, 2020 (6):62.)