Numerical Study of Bath Dynamics in the Industrial-Scale Top Submerge Lance Furnaces

Wan, Zhanghao; Yang, Shiliang; Kong, Desong; Li, Dongbo; Hu, Jianhang; Wang, Hua

doi:10.1007/s11663-023-02823-3

Cited by 5 publications

(1 citation statement)

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“…The study employs a two‐fluid (nitrogen, slag) VOF model combined with high‐resolution grids (0.2–2 mm) to mathematically simulate the slag splashing process in an industrial converter and predict the behavior of slag splashing. By calibrating the slag velocity, [ 24 ] quantitative analysis is performed to determine the optimum lance height for slag splashing and establish a correction relationship between the model and prototype lance height. Furthermore, the study assesses the impact of nitrogen flow rate on the impact crater profile, splashing shape, and angles.…”

Section: Introductionmentioning

confidence: 99%

Study on Slag Splashing Behavior in a 120 t Converter Based on Physical and Mathematical Simulation

Lin

Chen

2023

steel research int.

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The service life of converter linings is crucial for efficiency and emission reduction. Slag splashing performance is essential in steelmaking. This study constructs a physical model based on a specific 120‐ton converter using similarity principles. Dimensional analysis is employed to investigate process parameters and fluid properties. The influence of various process parameters on slag splashing performance is analyzed. Mathematical simulations using the VOF method are conducted to quantitatively assess the volume of slag splashing, determine the optimum lance height, and examine the effects of nitrogen flow rate on the impact crater profile, splashing shape, and angle. The results demonstrate that when the fluid viscosity satisfies 6.5×10‐6 µp×ρm and the surface tension satisfies 6.5×10‐4 σp×ρm, the lance height in the physical model and the prototype satisfy geometric similarity. This provides a formula for approximating an actual slag‐like fluid. However, as no suitable fluid meeting the conditions is found, a corrective relation for the lance height between the physical model and the prototype is established to optimize the process parameters. By adjusting the lance height and bottom gas flow rate, damaged areas can be repaired, while modifying the nitrogen flow rate alters the shape of the slag splashing, resulting in uniform slag splashing.This article is protected by copyright. All rights reserved.

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Section: Introductionmentioning

confidence: 99%