钒钛磁铁矿冶炼铁水的黏流性能及其影响因素

doi:10.13228/j.boyuan.issn0449-749x.20210260

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Abstract Vanadium-titanium magnetite is one of the important iron ore resources in China, which has extremely high comprehensive utilization value. The efficient smelting of vanadium-titanium magnetite will bring huge economic benefits, the viscous flow properties of molten iron is the key factor affecting the anterograde of the blast furnace. The molten iron bearing vanadium (V) and titanium (Ti) can be smelted from the vanadium-titanium magnetite ore by blast furnace. The fluidity of V-Ti bearing molten iron is poorer than that smelted from the ordinary iron ore, which may result in difficulties in iron discharge and retaining of molten metal in tapping channel and iron ladle. In this case, the smelting process can be seriously affected. The effects of V and Ti contents on viscosity of molten iron were obtained through the self-developed viscosity tester in the research of V-Ti bearing molten iron.Meanwhile, the growth mechanism of high melting point phase in molten iron was explored by means of microscopic in-situ analysis and characterization, and the influence mechanism of composition on viscosity was deeply revealed.The results indicate that the viscosity of molten iron gradually increased with the increasing of Ti content when the mass percent of Ti varied from 0.10% to 0.50%. The V content had no significant effect on viscosity of molten iron when the mass percent of V was lower than 0.30%, while the viscosity of molten iron increased sharply with the increasing of the mass percent of V when it was higher than 0.30%. In addition, the main reason for this phenomenon is the precipitation of high melting point carbonitrides (TiC, TiN, VC, VN) which can distribute in molten iron, and then increases the viscosity and deteriorates the fluidity of molten iron. It is demonstrated that there are two mechanisms for the growth of high melting point phases in molten iron. One is the nucleation growth of high melting point phase, and the other is the growth of high melting point phase by collisional polymerization after nucleation.

Key words： vanadium-titanium magnetite viscosity molten iron titanium carbonitride nucleation growth

Received: 06 May 2021

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	Articles by authors
	HOU Piao
	YU Wen-zhou
	BAI Chen-guang
	PAN Cheng
	YUAN Wan-neng
	LI Tao

Cite this article:

HOU Piao,YU Wen-zhou,BAI Chen-guang等. Viscous flow properties and influencing factors of vanadium-titanium magnetite smelting iron[J]. Iron and Steel, 2022, 57(1): 57-65.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20210260 OR http://www.chinamet.cn/Jweb_gt/EN/Y2022/V57/I1/57

[1] 陈露露. 我国钒钛磁铁矿资源利用现状[J].中国资源综合利用,2015,33(10):31.(CHEN Lu-lu.Current situation of vanadium-titanium magnetite resource utilization[J].China Resources Comprehensive Utilization[J].2015,33(10):31.)
[2] 谭其尤, 陈波, 张裕书,等. 攀西地区钒钛磁铁矿资源特点与综合回收利用现状[J]. 矿产综合利用,2011(6):6.(TAN Qi-you,CHEN Bo,ZHANG Yu-shu,et al.Characteristics and current situation of comprehensive utilization of vanadium titano-magnetite resources in Panxi Region[J].Mineral Resources, 2011(6):6.)
[3] ZHANG J L,WEI M F,GUO H W, et al. Effect of Ti and Si on the viscosity and solidification properties of molten iron[J]. Journal of University of Science and Technology Beijing, 2013, 35(8):994.
[4] 吕庆, 唐琦, 孙艳芹,等. 钒钛磁铁矿高炉冶炼的炉渣性质与钒氧化物还原关系[J]. 钢铁钒钛, 2016, 37(6):1.(LÜ Qing,TANG Qi,SUN Yan-qin, et al. The relationship between the properties of vanadium-titanium magnetite smelting blast furnace slag and vanadium oxide reduction[J]. Iron Steel Vanadium Titanium, 2016, 37(6):1.)
[5] 苟雪飞. 1号高炉保钒的浅探[J]. 四川冶金, 2012(3):5.(GOU Xue-fei.1^#blast furnace protection vanadium shallow discussion[J].Sichuan Metasllurgy, 2012(3):5.)
[6] 贺媛媛,刘清才,杨剑,等.含钛铁水流动性能研究[J].钢铁钒钛,2010,31(2):10.(HE Yuan-yuan,LIU Qing-cai,YANG Jian,et al.Experimental investigation on fluidity of hot metal bearing titanium[J]. Iron Steel Vanadium Titanium, 2010,31(2):10.)
[7] 赵信亮,苗广志.高炉铁水粘罐分析[J].河北冶金,2015(10):33.(ZHAO Xin-liang,MIAO Guang-zhi.Analysis about hot metal adhesion in ladle[J].Hebei Metallurgy, 2015(10):33.)
[8] 张友平,张振伟,毛晓明,等.高炉含铬铁水粘罐现象的探讨[J].宝钢技术,2015(1):50.(ZHANG You-ping,ZHANG Zhen-wei,MAO Xiao-ming,et al. Discussion on sticking of Cr-containing hot metal in torpedo ladle[J].Baosteel Technology, 2015(1):50.)
[9] 顾攀.含钒铬铁水粘度及熔化性温度研究[D].重庆:重庆大学,2018.(GU Pan.Investigation on Viscosity and Melting Temperature of V-Cr Containing Hot Metal[D].Chongqing:Chongqing University,2018.)
[10] 曲丹阳.合金熔体粘度检测新方法及装置[D].哈尔滨:哈尔滨理工大学,2015.(QU Dan-yang.The New Method and Instrument for Measuring Viscosity of the Alloy Metal Liquid[D].Harbin:Harbin University of Science and Technology,2015.)
[11] ZHANG F,DU Y, LIU S,et al. Modeling of the viscosity in the AL-Cu-Mg-Si system: Database construction[J]. Calphad, 2015,49:79.
[12] JIA Ran, BIAN Xiu-fang, LÜ Xiao-qian, et al. The relationship between viscosity and glass forming ability of Al-(Ni)-Yb alloy systems[J]. Science China Physics, Mechanics and Astronomy,2010,53(3):390.
[13] LIU Y, LÜ X, BAI C, et al. Viscosity evaluation of Fe-Ni-Co ternary alloy from the measured binary systems[J]. Journal of Industrial and Engineering Chemistry, 2015, 30:106.
[14] Tomasz Gancarz,Wladyslaw Gasior. The effects of Na addition on the density, surface tension and viscosity of liquid Sn-Zn alloys[J]. Fluid Phase Equilibria, 2016,418:57.
[15] 文光远,鄢毓璋,赵诗金,等.含钒钛铁水性质的研究[J].钢铁,1996,31(2):6.(WEN Guang-yuan,YAN Yu-zhang,ZHAO Shi-jin,et al.Properties of liquid iron containing vanadium and titanium[J].Iron and Steel, 1996,31(2):6.)
[16] 张建良,韦勐方,国宏伟,等.Ti和Si对铁液黏度和凝固性质的影响[J].北京科技大学学报,2013,35(8):994.(ZHANG Jian-liang,WEI Meng-fang, GUO Hong-wei, et al.Effect of Ti and Si on the viscosity and solidification properties of molten iron[J]. Journal of University of Science and Technology Beijing, 2013,35(8):994.)
[17] 黄希祜,钢铁冶炼原理[M].北京:冶金工业出版社,2014.(HUANG Xi-hu.Ferrous Metallurgy Theory[M].Beijing:Metallurgical Industry Press,2014.)
[18] GAO Lei-zhang, MA Tong-xiang, HU Meng-jun,et al.Effect of titanium content on the precipitation behavior of carbon-saturated molten pig iron[J].International Journal of Minerals Metallurgy and Materials,2019,26(4):483.
[19] 朱克旺. 铁水中钛化物析出的热力学及动力学分析[D].沈阳:东北大学,2015.(ZHU Ke-wang.Thermodynamics and Kinetics on Precipitation of Titanium Compound in Hot Metal[D].Shenyang:Northeastern University,2015.)
[20] 张邦文,李保卫,贺友多.金属熔体中夹杂物的生长动力学[J].钢铁研究学报,2005,17(6):19.(ZHANG Bang-wen,LI Bao-wei,HE You-duo. Growth kinetics of single inclusion in molten metal[J]. Journal of Iron and Steel Research, 2005,17(6):19.)