Water modeling of molten steel flow in a multi-strand tundish with gas blowing

Jiang, Jing; Li, Jingshe; Wu, Huajie; Yang, Shufeng; Li, Tao; Tang, Haiyan

doi:10.1007/s12613-010-0204-0

Cited by 13 publications

(8 citation statements)

References 4 publications

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“…The more the captured inclusions, the lower the cleanliness of molten steel in the ingot mold. Therefore, in the research, the inclusion removal efficiency was calculated by formula (1 − λ/1000)×100%, which stands for the floatation ability of inclusions in a tundish [16][17][18][19][20].…”

Section: Experimental Methodsmentioning

confidence: 99%

Improvement of tundish shape and optimization of flow control devices for sequence casting heavy steel ingots

Wen

Huang

Tang

et al. 2012

Int J Miner Metall Mater

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The metallurgical effect of a round tundish used to cast heavy steel ingots in machine works at present was evaluated through water modeling experiments. The flow control devices of the improved oval tundish, which was used instead of the round tundish, had been optimized. The results show that the residence time of the round tundish is short, its inclusion removal efficiency is too low, and it has more dead zones and an unreasonable flow field. Compared with the round tundish, the improved oval tundish with the optimized weir and dam has a better effect: its minimum residence time is prolonged by 38.1 s, the average residence time is prolonged by 233.4 s, its dead volume fraction decreases from 26% to 15%, and the ratio of plug volume fraction to dead volume fraction increases from 0.54 to 1.27. The inclusion removal efficiency also increases by 17.5%.

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Section: Experimental Methodsmentioning

confidence: 99%

Improvement of tundish shape and optimization of flow control devices for sequence casting heavy steel ingots

Wen

Huang

Tang

et al. 2012

Int J Miner Metall Mater

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show abstract

“…Yang et al [32] 2 NaCl Saturated 100 3.2 E-Curve Revised c) Chen et al [33] 4 KCl Saturated 50 2 E-Curve Revised c) Jiang et al [34] 4 KCl Saturated 200 1.9…”

Section: E-curve Zhengmentioning

confidence: 99%

Challenge of Residence Time Distribution Curve in Tundish for Continuous Casting of Steel

Ding

Lei

Chen

et al. 2022

steel research int.

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The residence time distribution (RTD) curve is a simple and useful method to analyze the flow behavior in the tundish. In the last decades, analysis result acquirement based on the RTD curve has been applied to design and optimize the flow control devices in a simple bare tundish or a multistrand tundish. There are many factors to affect the acquirement and analysis of the RTD curve, such as the tracer, the measuring technology, and the analysis model. In order to find a solution for the above issues, the latest progress and research status of RTD curve are discussed in the fields of water model, mathematical model, RTD analysis model, and measuring technology. After comparison, the KCl solution is a good tracer, and its tracer concentration and volume can be determined by the dimensionless tracer parameter (Dtp). The extended combined model can be applied to analyze the RTD curve by pulse input of tracer, and the mean residence time is the key parameter to identify the difference in fluid characteristics among the strands.

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“…In addition, the tracer selection was only mentioned in several words scattered in papers all over the world. Acid, salt solution, dye solution, potassium permanganate and purple food have been used as tracer,23 while from the view of measurement accuracy, high frequency of conductivity measurement and easy access to, salt solution such as KCl and NaCl solution have been widely used24–33 as summarized in Table 1. From Table 1, the model tundish volume changed from 75 to 1270 L, and the injected tracer amount varied from 20 to 250 mL.…”

Section: Introductionmentioning

confidence: 99%

Effects of Salt Tracer Amount, Concentration and Kind on the Fluid Flow Behavior in a Hydrodynamic Model of Continuous Casting Tundish

Chen

Cheng

Sun

et al. 2012

steel research int.

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The hydrodynamic modeling method that widely used to simulate the fluid flow was reconsidered and discussed in this paper. The effects of injected salt tracer amount, concentration and kind on the fluid flow behavior in a hydrodynamic model tundish were investigated. The results were compared with the mathematical modeling calculation results, that the tracer density effect was eliminated. The residence time distribution (RTD) curve of tracer introduced deviated to the left side of the calculated curve, besides the deviation was increased as dimensionless tracer amount (the ratio of tracer amount to hydrodynamic model tundish volume) increased from 0.202 × 10−3 to 1.008 × 10−3. The results of tracer concentration study were similar, namely the deviation was increased with concentration increased; on the other hand, the deformation of a “stair‐shape” RTD curve occurred when tracer concentration was much lower (at dimensionless tracer amount of 0.168 × 10−3 with converting to saturated solution). Besides, the effect of tracer kind on the accuracy of hydrodynamic modeling was also studied; the measurements of KCl solution with lower density than that of NaCl solution exhibited more of accuracy. Finally, the optimized tracer in hydrodynamic model tundish of present work is saturated KCl solution with dimensionless tracer amount of 0.202 × 10−3.

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Water modeling of molten steel flow in a multi-strand tundish with gas blowing

Cited by 13 publications

References 4 publications

Improvement of tundish shape and optimization of flow control devices for sequence casting heavy steel ingots

Improvement of tundish shape and optimization of flow control devices for sequence casting heavy steel ingots

Challenge of Residence Time Distribution Curve in Tundish for Continuous Casting of Steel

Effects of Salt Tracer Amount, Concentration and Kind on the Fluid Flow Behavior in a Hydrodynamic Model of Continuous Casting Tundish

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