2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 1: D'Abreu Intl. Symp. / Iron and Steel Making

Editors:	Kongoli F, Noldin JH, Takano C, Lins F, Gomez Marroquin MC, Contrucci M
Publisher:	Flogen Star OUTREACH
Publication Year:	2016
Pages:	320 pages
ISBN:	978-1-987820-37-9
ISSN:	2291-1227 (Metals and Materials Processing in a Clean Environment Series)

CD shopping page

Physical modeling on the migration behavior of gas bubbles in the metallurgical melt

Yuansheng Huang¹; Guo Jun Ma²; Puhong Cheng³; YIfeng Cao³; Liang Meng³;
¹KEY LABORATORY FOR FERROUS METALLURGY AND RESOURCES UTILIZATION OF MINISTRY OF EDUCATION, WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY, Wuhan, China; ²KEY LABORATORY FOR FERROUS METALLURGY AND RESOURCES UTILIZATION OF MINISTRY OF EDUCATION, WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY,WUHAN 430081, CHINATHE STATE KEY LABORATORY OF REFRACTORIES AND MET, wuhan, China; ³WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY, Wuhan, China;
Type of Paper: Regular
Id Paper: 112
Topic: 2

Abstract:

In order to investigate the dust formation mechanisms via gas bubbles bursting at the surface of the metallurgical melt, water model experiments on a single bubble in the water/oil solution were performed. Different parameters, such as gas blowing time and volume, the height of collecting device and slag viscosity, on the bursting liquid drops (dust) output and the change of physical properties such as bubble shape were considered. The results show that the bubble size increases with the increase of the diameter of the bottom-blowing pore, the bubble continuous overturn when it goes up and its movement becomes more tempestuously with the increase of gas bubble size. The bursting droplet generation increases with blowing time. With the increasing of gas volume, the ascending of gas bubbles will accelerate and gradually increase the received splashing droplets content. The collected droplets reduce with the height increase of collection device. When the height of collection device is more than 12mm, the collected bursting droplets almost keep constant. Moreover, the slag (oil) viscosity improvement is detrimental to the droplet generation.

Keywords:

Physical modeling; bubble bursting; dust; formation


References:

[1] Huber J C, Patisson F, Rocabois P, et al. Some means to reduce emissions and improve the recovery of electric arc furnace dust by controlling the formation mechanisms. Proceedings of the TMS Fall Extraction and Processing Conference.1991, (2):1483-1492.
[2] Clift R, Grace J R, Weber M E. Bubbles, Drops and Particles. Academic Press, New York, 1978.
[3] Bhaga D, Weber M E. Bubbles in viscous liquids: shapes, wakes and velocities. Journal of Fluid Mechanics, 1981, 105:61-85.
[4] De Kee D, Carreau P J, Mordarski J. Bubble velocity and coalescence in viscoelastic liquids. Chemical Engineering Science, 1986, 41(9):2273-2283.
[5] Ma D, Liu M, Zu Y, Tang C. Two-dimensional volume of fluid simulation studies on single bubble formation and dynamics in bubble columns. Chemical Engineering Science, 2012, 72:61-77.
[6] Pan Y, Langberg D. Two-dimensional Physical and CFD Modelling of Large Gas Bubble Behaviour in Bath Smelting Furnaces. The Journal of Computational Multiphase Flows, 2010, 2 (3):151-164.
[7] Ma C, Bo H. Experimental observations of the special distribution of film drops produced by bursting bubbles on a free liquid surface (in Chinese). J. Tsinghua Univ (Sci & Technol).2013, 53 (9):1310-1314.
[8] Guézennec A G, Huber J C, Patisson F, et al. Dust formation by bubble-burst phenomenon at the surface of a liquid steel bath. ISIJ International, 2004, 44(8): 1328-1333.
[9]Han Z, Holappa L. Bubble bursting phenomenon in gas/metal/slag systems. Metallurgical and Materials Transactions B, 2003, 34(5):525-532.
[10] Han Z, Holappa L. Characteristics of iron entrainment into slag due to rising gas bubbles. ISIJ International, 2003, 43(11):1698-1704.
[11] Müller KT, Holappa L, Neuschutz D. Control of ejections caused by bubble bursting in steelmaking processes, Steel Research, 2003, 74(2): 61-69.
[12] Yu A, Buyevich B, Webbon W. Bubble formation at submerged orifice in reduced gravity. Chemical Engineering Science, 1996, 51(21): 4843-4857.
[13] Koichi T, Hideki T. Bubble formation at orifice in viscoelastic liquids. AIChE Journal, 1997, 43(11): 2903-2910.

Full Text:

Click here to access the Full Text

Cite this article as:

Huang Y, Ma G, Cheng P, Cao Y, Meng L. Physical modeling on the migration behavior of gas bubbles in the metallurgical melt. In: Kongoli F, Noldin JH, Takano C, Lins F, Gomez Marroquin MC, Contrucci M, editors. Sustainable Industrial Processing Summit SIPS 2016 Volume 1: D'Abreu Intl. Symp. / Iron and Steel Making. Volume 1. Montreal(Canada): FLOGEN Star Outreach. 2016. p. 123-134.