Control of Slag Carryover from the BOF Vessel During Tapping: BOF Cold Model Studies

Kamaraj, Ashok; Mandal, G. K.; Roy, Gour Gopal

doi:10.1007/s11663-018-1432-3

Cited by 9 publications

(4 citation statements)

References 31 publications

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“…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: 87%

“…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

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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.

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Section: Resultssupporting

confidence: 87%

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

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show abstract

“…The range of SCO was decided based on the industry experience and reported information. [26][27][28] After the complete melting of the carryover slag, the synthetic slag and lime powder were added. The slag thickness above the liquid steel was carefully measured by dipping the tied double wires into the liquid bath, consisting of copper and galvanized (GI) steel.…”

Section: A Experiments Proceduresmentioning

confidence: 99%

The Role of Slag Carryover on the Non-metallic Inclusion Evolution and Magnetic Behavior in Electrical Steel

Kamaraj

Murugaiyan

Mandal

et al. 2022

Metall Mater Trans B

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“…When molten steel is transferred in different containers, such as converter teeming, [ 1 ] ladle teeming [ 2 ] and tundish teeming, [ 3 ] the vortex occurs frequently. It produces slag entrainment and impairs molten steel cleanliness.…”

Section: Introductionmentioning

confidence: 99%

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

Zhao

et al. 2022

steel research int.

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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

Control of Slag Carryover from the BOF Vessel During Tapping: BOF Cold Model Studies

Cited by 9 publications

References 31 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

The Role of Slag Carryover on the Non-metallic Inclusion Evolution and Magnetic Behavior in Electrical Steel

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

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