Reduction of Tundish Skull and Yield Improvement in Steel Plants Through Physical Modeling of Steelmaking Tundish Systems

Mazumdar, Dipak; Singh, Om Prakash; Dutta, Joy; Ghosh, Shaktimoy; Satish, D. V.; Chakraborty, Saurav

doi:10.1007/s12666-011-0067-8

Cited by 16 publications

(12 citation statements)

References 8 publications

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“…1 The vast application of steel makes it production process important aspect of study. [2][3][4][5] The cleanliness of steel is a most required process of industry. 6 Various methods have been used to enhance the properties of steel during solidification.…”

Section: Introductionmentioning

confidence: 99%

Effect of Port Angle of Sen on Melt Flow in a Mold

Siddiqui¹

2018

IRATJ

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The molten metal from tundish is directed to continuous casting mold by submerged entry nozzle (SEN). The SEN is usually bifurcated nozzle, which is made of different shape and angle. The melt flow structure in mold plays an important role. Thus, port of SEN is made at different angles to control the melt structure. Many authors have reported that longitudinal high magnitude of melt and subsequent production of turbulence causes severe defects in casted products. In the present work, the melt flow structure has been studied under different port angles. It has been seen that melt flow has been modified in the continuous casting mold. Moreover, it was found that the change in SEN port angle affects vertical downward velocity and turbulence behavior in the molten steel region.

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Section: Introductionmentioning

confidence: 99%

Effect of Port Angle of Sen on Melt Flow in a Mold

Siddiqui¹

2018

IRATJ

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“…As steelmaking is a high temperature and practically opaque process, researchers have used physical and mathematical simulation to generate deeper insight into the process [2]. Physical simulation of steelmaking process has become possible because the kinematic viscosity of liquid steel at steelmaking temperatures is similar to that of water at room temperature [3,4]. Efforts toward optimization of tundish design are continuous, and analyses of residence time of liquid steel (water in case of physical models) have been typically employed by many researchers [5][6][7][8] for assessment of melt flow inside the tundish.…”

Section: Introductionmentioning

confidence: 99%

Novel Image Analysis-Based Method for Residence Time Distribution Analysis in Steelmaking Tundish

Nigam

Gupta²,

Singh³

2021

Trans Indian Inst Met

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A digital image processing-based technique has been developed for residence time distribution (RTD) analysis in a steelmaking tundish. This work presents an alternative approach to current RTD analysis techniques like tracer dispersion analysis, particle image velocimetry, numerical analysis, etc. The video analysis method has been developed, and different process conditions have been evaluated. The physical model of a steelmaking tundish having water as a working fluid similar to the one which is used for RTD analysis through other methods has been used. New incoming fluid (water) has been identified using colored water so that all properties apart from color remain the same. The proposed method breaks the video into static frames, and through application of Lucas-Kanade method, the moving colored pixels in the region of interest are identified. Further intensity analysis of the moving colored pixels is done. In the present novel method, RTD curve is obtained by plotting the intensity of blue component at the outlet vs time. The obtained RTD from VT-LK method has been validated against conventional and established RTD technique widely used for RTD analysis.

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“…Results of such research [8][9][10][11][12][13][14][15][16][17] were discussed in details in article [18]. It can be stated that phenomena of slag entrainment and their risk of creating can be observed and studied the best when the similarity theory is based on Froude criterion: ω -the speed of liquid flow; m· s -1 , g -gravitational acceleration; m· s -2 , l -characteristic dimension; m. the second phase, only in the presence of atmosphere, the critical level of 200 mm for vortex creation was the highest.…”

Section: Introductionmentioning

confidence: 99%

“…Many articles and authors [8][9][10][11][12][13][14][15][16][17] concentrated on such problem (slag entrainment in the metallurgical aggregates) using physical modelling with better or worse results. However, these works mainly focus on setting and adapting the theory of similarity for the case when liquids with various density and viscosity have to simulate steel and slag.…”

Section: Introductionmentioning

confidence: 99%

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Physical Modelling of Tundish Slag Entrainment under Various Technological Conditions

Michalek¹,

Gryc²,

Socha³

et al. 2017

Archives of Metallurgy and Materials

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This paper deals with the issue of physical modelling of vortexes creation and tundish slag entrainment over the mouth of the nozzle into the individual casting strands. Proper physical model is equivalent to the operational continuous casting machine No. 2 in TŘINECKÉ ŽELEZÁRNY, a.s. Physical modelling methodology and simulated operational conditions are shortly described. Physical modelling was used for the evaluation of current conditions of steel casting at the application of different impact pads in the tundish. Further, laboratory measurement on the physical model aiming the determination of exact critical periods of vortexes creation and study of the slag entrainment as a consequence of changes in surface level during the tundish refilling to standard level were realised. The obtained results were analysed and discussed.

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Reduction of Tundish Skull and Yield Improvement in Steel Plants Through Physical Modeling of Steelmaking Tundish Systems

Cited by 16 publications

References 8 publications

Effect of Port Angle of Sen on Melt Flow in a Mold

Effect of Port Angle of Sen on Melt Flow in a Mold

Novel Image Analysis-Based Method for Residence Time Distribution Analysis in Steelmaking Tundish

Physical Modelling of Tundish Slag Entrainment under Various Technological Conditions

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