Analysis of Factors Affecting Free Surface Vortex Formation during Steel Teeming

Li, Hongxia; Wang, Qiang; Jiang, Jinchun; Lei, Hong; Zhang, Guo; He, Jicheng

doi:10.2355/isijinternational.isijint-2015-096

Cited by 22 publications

(9 citation statements)

References 12 publications

(13 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Only individual emulsion spots are visible when using the plug on the water's surface in the ladle after the tapping (the thickness is almost impossible to estimate). It was established that the amount of slag-oil that has entered the ladle under the conditions of bath tapping without the plug is on average 10-30%, depending on the initial slag-oil content in the converter, which agrees with the papers of other authors [23][24][25][26][27][28][29]. At the same time, when using the plug, the amount of slag-oil in the ladle is 5-10%, which should significantly improve the quality of the produced metal-water and its further processing in the ladle.…”

Section: Resultssupporting

confidence: 86%

“…Modelling followed dimensionless similarity criteria to meet the experimental conditions for the actual technological process. Based on a literature review, the Reynolds and Froude criteria were considered for cold simulations using water and machine oil as model fluids [23][24][25][26][27][28][29]. The object of the study was the period of metal tapping from the BOF vessel.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Study on a Two-Phase Low-Temperature Model of the Features of Metal Tapping in Basic Oxygen Furnace

Golub

Молчанов

Koveria

et al. 2022

Acta Metall Slovaca

View full text Add to dashboard Cite

The paper shows the results of a study of the influence of the cut-off method of the slag by using destructible plugs on the quantitative indicators of the redistribution of slag and metal in the steel ladle during the metal tapping operation from the converter. The laboratory setup simulates a real 160-ton industrial top-blown oxygen converter, and a steel ladle at a scale of 1:18 has been used to fulfill the study. Water was chosen as a liquid steel imitator, and machine oil was chosen for slag with parameters that ensure the similarity of physical parameters in the metal-slag system. The physical modelling of the tapping process of a two-phase converter bath in the case of a destructible plug in the tap hole compared to the tapping option without it showed a significant positive effect of the presence of the plug in the initial period from the moment the converter is tilted.

show abstract

Section: Resultssupporting

confidence: 86%

Section: Methodsmentioning

confidence: 99%

Study on a Two-Phase Low-Temperature Model of the Features of Metal Tapping in Basic Oxygen Furnace

Golub

Молчанов

Koveria

et al. 2022

Acta Metall Slovaca

View full text Add to dashboard Cite

show abstract

“…It can be shown that using the eccentric nozzle lowers the critical height of the vortex, which has also been confirmed in other studies. [ 35 ] By applying the electromagnetic force, the critical height is further decreased. The vortex suppression effect utilizing the electromagnetic force diminishes with increasing nozzle eccentricity.…”

Section: Resultsmentioning

confidence: 99%

“…When e

\neq

0, the tangential velocity increases at first, then stabilizes. [ 35 ] For the analysis of vortex differences caused by central or eccentric nozzles, the tangential velocities along the radial direction without the electromagnetic force are explored, as shown in Figure 9b. By comparing the tangential velocities when the teeming time t = 24 or t = 28 s, the tangential velocity increases continuously as the ladle teeming process continues.…”

Section: Resultsmentioning

confidence: 99%

Optimizing Design of Vortex Suppression Utilizing Static Electromagnetic Field during Steel Teeming from Ladle

Zhao

et al. 2022

steel research int.

Self Cite

View full text Add to dashboard Cite

Vortex slag entrapment during ladle teeming process causes liquid steel pollution, nozzle clogging, etc. Tangential velocity of molten steel is directly related to the vortex. Herein, the tangential velocity is reduced by the electromagnetic force generated by the interaction between a static electromagnetic field and the molten steel. Through the multiphysical field simulation, influences of the electromagnetic parameter, coil structure, coil position, and ladle structure on the vortex are investigated. Results demonstrate that magnetic induction intensity is proportional to the coil ampere‐turns, thereby affecting the vortex suppression. The action region of the static electromagnetic field expands when the coil diameter increases from 180 to 360 mm; it is beneficial to reduce the vortex critical height by 37.9%. The reduction of the distance between the coil and the molten steel also promotes the vortex suppression. The coil misalignment is beneficial to fully utilize the electromagnetic field; the critical height is reduced by 15%. The tangential velocity is changed when the nozzle diameter and eccentricity are optimized, and the vortex suppression will be amplified by using the electromagnetic field. This study provides the theoretical guidance for the optimizing design of the vortex suppression utilizing the static electromagnetic field.

show abstract

“…Since the initial tangential velocity is the prerequisite for vortex formation 31 , six cross-sections, which are nearly parallel to the direction of the central uid velocity, were selected (Fig. 4c).…”

Section: Simulation Of Vortexes In Sfmentioning

confidence: 99%

Microscale vortexes in cellular media

Yan

Zhang

et al. 2022

Preprint

View full text Add to dashboard Cite

Vortex formation is one of the key phenomena of fluid transport within porous foam media, being responsible for improving mass transfer in relevant engineering applications such as separation and catalysis. Here, water flows through SiC open-cell foam media were investigated using the combined experimental and simulation method. Direct observation of pore-scale vortexes in the foam media was achieved experimentally, showing the formation of forced vortexes in foam cells with the constant exchange of fluid elements between vortexes and bulk fluid, which was confirmed by the CFD simulation using the virtual 3D replica of the foam media. Upon the validation of the simulation results by the experimental ones, further investigation of the vortex formation mechanism in the porous foam media was performed. Based on the Galileo invariance, a dimensionless vortex formation number (Vop) with the physical significance of vorticity was proposed, as the criteria to determine vortex formation in the porous channel of open-cell foams.

show abstract

Analysis of Factors Affecting Free Surface Vortex Formation during Steel Teeming

Cited by 22 publications

References 12 publications

Study on a Two-Phase Low-Temperature Model of the Features of Metal Tapping in Basic Oxygen Furnace

Study on a Two-Phase Low-Temperature Model of the Features of Metal Tapping in Basic Oxygen Furnace

Optimizing Design of Vortex Suppression Utilizing Static Electromagnetic Field during Steel Teeming from Ladle

Microscale vortexes in cellular media

Contact Info

Product

Resources

About