Optimization of the Mixing Time Using Asymmetrical Arrays in Both Gas Flow and Injection Positions in a Dual-plug Ladle

Villela-Aguilar, José de Jesús; Ramos-Banderas, José Ángel; Hernández-Bocanegra, Constantin Alberto; Urióstegui-Hernández, Antonio; Solorio-Díaz, Gildardo

doi:10.2355/isijinternational.isijint-2019-688

Cited by 21 publications

(15 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Gas flow rate and injection ratio Villela-Aguilar /2020/ [13] Angular position Three-phase physical modeling (conductimetry and colorimetry)…”

Section: Angular Position Three-phase Mathematical Modeling (Discrete...mentioning

confidence: 99%

“…At the same time, we took into account the operating conditions that have been recently reported as favorable for a proper operation of the ladle furnace. [6,12,13,15,16] Accordingly, an optimization study is presented, which is based on four design and operating [3] Angular position Two-phase physical modeling (conductimetry) Two nozzles, one at 0.25R and the other at 0.75R, separated 135 Radial position and symmetry Gas flow rate and injection ratio Tang et al/2009/ [4] Nozzle [9] Nozzles arrangement Two-phase mathematical modeling (quasisingle-phase)…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optimizing the Performance of a Dual‐Injection Gas‐Stirred Ladle Using Physical Modeling

González‐Rivera

Ramírez-Argáez

Amaro-Villeda

et al. 2022

steel research int.

View full text Add to dashboard Cite

Herein, the effects of the angle between nozzles, oil thickness, gas flow ratio, and gas flow rate on mixing time and open eye area in a physical model of a gasstirred ladle with dual plugs are studied. The effect of the variables under study is determined using a two-level factorial design. Particle image velocimetry (PIV) is used to establish, through the analysis of flow patterns, the effect of the studied variables on the hydrodynamics of the system. Results suggest that operating conditions significantly change the flow structure and greatly influence the system's mixing time and open eye area behavior. The Pareto front of the optimized results on mixing time and open eye area is obtained through a multiobjective optimization using a genetic algorithm (NSGA-II). The results are conclusive in that, for optimal performance, the ladle must be operated using an angle slightly higher than 90 between plugs, a differentiated flow ratio, high oil thickness, and a gas flow rate adjusted according to whether the preference is given to the protection of the bath or to the mixing process.

show abstract

“…Gas flow rate and injection ratio Villela-Aguilar /2020/ [13] Angular position Three-phase physical modeling (conductimetry and colorimetry)…”

Section: Angular Position Three-phase Mathematical Modeling (Discrete...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimizing the Performance of a Dual‐Injection Gas‐Stirred Ladle Using Physical Modeling

González‐Rivera

Ramírez-Argáez

Amaro-Villeda

et al. 2022

steel research int.

View full text Add to dashboard Cite

show abstract

“…Model To measure the mixing time, the methodology proposed by Villela et al 32) was employed in which the average normalized concentration is determined for a system with multiple sensors in time t, which is determined by Eq. (10).…”

Section: Measurement Of Mixing Time In the Mathematicalmentioning

confidence: 99%

Effect of the Location of Tracer Addition in a Ladle on the Mixing Time through Physical and Numerical Modeling

et al. 2021

Self Cite

View full text Add to dashboard Cite

In the present work, the release of tracer location on the global mixing time in an agitated ladle furnace by gas bottom injection was analyzed. Then, a numerical multiphasic steel-slag-argon-air system of a prototype with a capacity of 150 tons was carried out. The simulation was validated by using a physical model with a 1/6 geometric scale using colorant, KCl dispersion measurements techniques and open slag eye opening. Four different tracer addition locations were strategically established to study the influence of tracer releasing location on chemical homogenization. From the results, it was found that the measurement of mixing times varies according to the location of the tracer addition, which to a greater extent is conditioned by the convective currents that at some extent were related to turbulent viscosity.

show abstract

“…Ladle refining furnaces are widely employed in the modern steel-making process for decarburization, desulfurization, inclusion removal and homogeneous temperature and composition. [1][2][3][4][5][6] As the crucial part of the ladle, purging plugs experience an intermittent thermal shock when the liquid steel is poured into and out of the ladle in cycles during the refining process. Moreover, an intense extra heat exchange occurs within the purging plug when the argon is continuously blown into the liquid steel through the slits assembled in the purging plug.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigations on Thermomechanical Behaviour of Purging Plug with Rectangular and Circular Slits

Tan

Jin

et al. 2021

ISIJ Int.

View full text Add to dashboard Cite

Purging plugs are widely used in the secondary refining process, and its service life determines the downtime and usage efficiency of the whole ladle. This study focuses on comparing the heat transfer and thermomechanical behaviour of purging plug with different slits to obtain the reason for the long service life of purging plug by thermal-structure coupling method. The numerical results showed that the moderation of temperature distribution is achieved by changing the slit shape and the reasonable arrangement of the circular slits. Furthermore, the circular slits can alleviate the stress concentration phenomena, and circular slits are better for decreasing the axial stress in the purging plug, which occurred at the position located 0.323 m above the bottom face, and its distance from the centre is 0.04 m.

show abstract

Optimization of the Mixing Time Using Asymmetrical Arrays in Both Gas Flow and Injection Positions in a Dual-plug Ladle

Cited by 21 publications

References 23 publications

Optimizing the Performance of a Dual‐Injection Gas‐Stirred Ladle Using Physical Modeling

Optimizing the Performance of a Dual‐Injection Gas‐Stirred Ladle Using Physical Modeling

Effect of the Location of Tracer Addition in a Ladle on the Mixing Time through Physical and Numerical Modeling

Numerical Investigations on Thermomechanical Behaviour of Purging Plug with Rectangular and Circular Slits

Contact Info

Product

Resources

About