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Hydraulic model experiment of non-metallic inclusion distribution in a bottom-blown argon ladle furnace |
JU Jian-tao,WEI Jian-qing,LIU Wen-guo |
(School of Metallurgical Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, Shaanxi, China) |
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Abstract In order to investigate the optimum bottom blowing parameters and inclusion distribution, the influence of inclusion removal under different process parameters and their own properties were studied. Based on the hydraulic model experiment of the 60 t refining furnace,the effects of air blowing, time and particle size on the removal of inclusions and spatial distribution of inclusions were studied by using high-speed camera and professional image processing software (Image Pro Plus). The results show that the best flow rate is 0.08 m3/h in the ladle bottom blowing process. The inclusion removal rate is similar with the time and the inclusions are basically removed for fourteen minutes.The inclusions of 200 to 355 μm are easier to be removed than the micro-inclusions of 105 to 150 μm. The number of inclusions in gas-liquid two-phase region is less than that in other regions, and the characteristic size is larger. There is a weak flow zone at the far bottom of the gas permeable brick. The density of inclusions in this area is larger and, it is not easy to be removed.
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Received: 17 February 2017
Published: 29 September 2017
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[6] |
Kwon Y J, Zhang J, Lee H G. A CFD-basedNucleation-growth-removal Model for Inclusion Behavior in a Gas-agitated Ladle during Molten Steel Deoxidation[J]. ISIJ .International,2008, 48(7): 891?900.
|
[1] |
Miki Y, Thomas B G. Modeling of Inclusion Removal in a Tundish [J]. Metallurgical and Material Transactions B,1999,30(4):639-648.
|
[2] |
蔡开科. 连铸坯质量控制 [M]. 北京:冶金工业出版社, 2010.3.
|
[7] |
巨建涛,王睿,折媛,赵福才. 钢包底吹氩去除钢中夹杂物的数值模拟[J]. 过程工程学报,2015,15(01):68-73.
|
[3] |
郑淑国,朱苗勇. 偏心底吹氩钢包内夹杂物行为的物理模拟[J]. 钢铁研究学报,2008,20(06):18-22.
|
[4] |
杨虎林,何平,翟玉春. 钢包底吹去除夹杂物的水力学模型[J]. 钢铁研究学报,2015,27(02):20-23.
|
[8] |
Zhang L F, Taniguchi S. Fundamentals of Inclusion Removal fromLiquid Steel by Bubble Flotation [J]. Int. Mater. Rev, 2000, 45(2):59-82.
|
[5] |
Arail H Matsumoto K ShimaskiS,etal .Model Experimtion on Inclution Removal by Bubble Flotation Accompanied by Particle Coagulation in Turbulent Flow[J]. ISIJ .International,2009 , 49(7): 965-974.
|
[9] |
Sahai Y,Emi T. Criteria for water modeling of melt flowand inclusion removal in continuous casting tundishes[J]. ISIJInternational, 1996, 36(9): 11-66.
|
[6] |
Kwon Y J, Zhang J, Lee H G. A CFD-basedNucleation-growth-removal Model for Inclusion Behavior in a Gas-agitated Ladle during Molten Steel Deoxidation[J]. ISIJ .International,2008, 48(7): 891?900.
|
[7] |
巨建涛,王睿,折媛,赵福才. 钢包底吹氩去除钢中夹杂物的数值模拟[J]. 过程工程学报,2015,15(01):68-73.
|
[10] |
周业连,朱苗勇,刘建斌,陈晶晶,郑淑国. 吹氩精炼钢包内非金属夹杂物去除机理[J]. 钢铁,2016,51(06):39-46.
|
[11] |
王敏,郝阳,马铖佑,王林静. 钢中非金属夹杂物形态对其去除行为的影响[J].工程科学学报,2016,38(01):34-40.
|
[8] |
Zhang L F, Taniguchi S. Fundamentals of Inclusion Removal fromLiquid Steel by Bubble Flotation [J]. Int. Mater. Rev, 2000, 45(2):59-82.
|
[9] |
Sahai Y,Emi T. Criteria for water modeling of melt flowand inclusion removal in continuous casting tundishes[J]. ISIJInternational, 1996, 36(9): 11-66.
|
[10] |
周业连,朱苗勇,刘建斌,陈晶晶,郑淑国. 吹氩精炼钢包内非金属夹杂物去除机理[J]. 钢铁,2016,51(06):39-46.
|
[11] |
王敏,郝阳,马铖佑,王林静. 钢中非金属夹杂物形态对其去除行为的影响[J].工程科学学报,2016,38(01):34-40.
|
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