Numerical Understanding on Refractory Flow-Induced Erosion and Reaction-Induced Corrosion Patterns in Ladle Refining Process

Wang, Qiang; Liu, Chang; Pan, Liping; He, Zhu; Li, Guangqiang

doi:10.1007/s11663-022-02471-z

Cited by 15 publications

(4 citation statements)

References 85 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A critical step in developing prediction models is the local mass transfer between the lining and slag/metal. This has to date been treated by semiempirical models Bai et al, (2022); Sarkar, Nash, and Sohn, 2020;Wang et al, 2022). Wang et al, (2022) applied 3D computational fluid dynamics (CFD) and their predictions seemed to agree with observations.…”

Section: Previous Work On Ladle Lining Erosionmentioning

confidence: 99%

“…This has to date been treated by semiempirical models Bai et al, (2022); Sarkar, Nash, and Sohn, 2020;Wang et al, 2022). Wang et al, (2022) applied 3D computational fluid dynamics (CFD) and their predictions seemed to agree with observations. However, they did not report the diffusivities used in their model, and the underlying erosion-corrosion models were empirical and tuned to the data.…”

Section: Previous Work On Ladle Lining Erosionmentioning

confidence: 99%

See 1 more Smart Citation

A pragmatical physics-based model for predicting ladle lifetime

Johansen,

Levfall,

Duran

2024

J. S. Afr. Inst. Min. Metall.

View full text Add to dashboard Cite

In this paper we develop a physics-based model for lining erosion in steel ladles. The model predicts the temperature evolution in the liquid slag, steel, refractory bricks, and outer steel shell of the ladle. The flow of slag and steel is due to forced convection induced by inert gas injection, vacuum treatment (extreme bubble expansion), natural convection, and waves caused by the gas stirring. The lining erosion takes place by dissolution of refractory elements into the steel or slag. The mass and heat transfer coefficients inside the ladle during gas stirring are modelled based on wall functions which take the distribution of wall shear velocities as a critical input. The wall shear velocities are obtained from computational fluid dynamics (CFD) simulations for a sample of scenarios, spanning out the operational space, and a model is developed using curve fitting. The model is capable of reproducing both thermal and erosion evolution well. Deviations between model predictions and industrial data are discussed. The model is fast and has been tested successfully in a 'semi-online' application. The model source code is available to the public at [https://github.com/SINTEF/refractorywear].

show abstract

Section: Previous Work On Ladle Lining Erosionmentioning

confidence: 99%

Section: Previous Work On Ladle Lining Erosionmentioning

confidence: 99%

A pragmatical physics-based model for predicting ladle lifetime

Johansen,

Levfall,

Duran

2024

J. S. Afr. Inst. Min. Metall.

View full text Add to dashboard Cite

show abstract

“…Research indicates that impurities in molten steel can readily adhere to the interface between the refractory and molten steel, degrading the quality of the final product. [ 18 ] Wang et al [ 19 ] formulated a mathematical model to assess the wear rate of refractory linings, finding that wear peaks near the slag layer and diminishes toward the bottom of the ladle. Alam et al [ 20 ] explored the wear characteristics and morphology of cast aluminum/SiC nanocomposites, demonstrating that SiC nanoparticles enhance wear resistance and reduce the friction coefficient of the composite material.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis and Experimental Study on Side Dam Temperature and Stress Field of Two‐Roll Casting

Zhang,

Li,

Fang

et al. 2024

steel research int.

View full text Add to dashboard Cite

The side sealing technology is crucial for ensuring the quality and process stability in twin‐roll casting (TRC). Investigating the temperature and stress distribution in side dams under operational conditions is vital, especially in understanding the causes of side dam fractures. Optimal performance of side dam materials is achieved when the boron nitride (BN) matrix is fine and homogeneous, with zirconium dioxide (ZrO2) and silicon carbide (SiC) particles evenly dispersed throughout. The fracture of the side dam after casting is mainly caused by BN interlamellar tear. The coexistence of BN lamellar tearing and BN layer fracture leads to the fracture of the side dam during the casting process. Through finite element simulation, the effects of variables such as pouring temperature, preheating temperature, and side dam thickness on temperature and stress distribution were analyzed. The findings indicate that a preheating temperature range of 1200–1300 °C minimizes thermal stress in the side dam. Building on these findings, a composite structure for the side dam is developed. Both internal and external composite structures have shown significant effectiveness in reducing thermal stress. These results are pivotal in extending the service life of side dams and enhancing the stability of the TRC process.

show abstract

“…Physical and numerical simulations have been widely used in the study of ladle bottom-blown argon [3,4]. Numerical simulation studies have great advantages in exploring the mass transfer phenomena and inclusions behaviour at the steel-slag interface, vacuum degassing at the gas-liquid interface, and the dissolution rate of solid alloys [5][6][7][8]. However, further improvements are needed in the combination of fluid dynamics and thermodynamics.…”

Section: Introductionmentioning

confidence: 99%

Process optimization of bottom-blown argon for 130t ladle furnace

Liu

Wei

Bao

et al. 2023

Ironmaking & Steelmaking

View full text Add to dashboard Cite

A quarter scale water model experiment is employed to investigate the effect of single and double porous plug placement and blowing flow rates on the mixing time, slag eye area, and slag entrapment depth. As a result, when the blowing flow rate is greater than 180 L min -1 , the blowing effect of double blowing plugs is better than that of single blowing plugs. The open eye area and slag entrapment depth in the double blow plug arrangement are smaller than that in the single blow plug arrangement. In general, the ladle refining effect is better when the blow plug is arranged at 0.4R position and the angle between the two blow plugs is 120°. The final recommended argon blowing process is 240-300 L min -1 for the heating and alloying process and 60-120 L min -1 for the soft blowing process, respectively.

show abstract

Numerical Understanding on Refractory Flow-Induced Erosion and Reaction-Induced Corrosion Patterns in Ladle Refining Process

Cited by 15 publications

References 85 publications

A pragmatical physics-based model for predicting ladle lifetime

A pragmatical physics-based model for predicting ladle lifetime

Numerical Analysis and Experimental Study on Side Dam Temperature and Stress Field of Two‐Roll Casting

Process optimization of bottom-blown argon for 130t ladle furnace

Contact Info

Product

Resources

About