Lance Design for Argon Bubbling in Molten Steel

• 作者: Joan Reyes
• 来源期刊: 世界工程和技术(英文)
• 学科: 工学
• 关键词: Bottom Injection Bubble Plume Computational Fluid Dynamics Lance Design Molten Steel Open Eye
• 年，卷（期）: 2020,（3）
• 页码范围: 317-328
• 页数: 12页
• 分类号: TG1

摘要

Three lance designs for argon bubbling in molten steel are presented. Bottom</span><span style="font-family:Verdana;"> bubbling is considered too. Geometries considered are straight-shaped, T-shaped, and disk-shaped. The bubbling behavior of these lances is analyzed using Computational Fluid Dynamics, so transient three dimensional, isothermal, two-phase, numerical simulations were carried out. Using the numerical results, the bubble distribution and the open eye area are analyzed for the considered lance geometries. The plume volume is calculated from the open eye </span><span style="font-family:Verdana;">area </span><span style="font-family:Verdana;">and the lance immersion depth using geometrical considerations. Among the three lance designs considered, disk-shaped lance has the bigger plume volume and the smaller mixing time. As the injection lance is deeper immersed</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> the power stirring is increased and the mixing time is de</span><span style="font-family:Verdana;">creased.