<p>A comprehensive study of inclusion aggregation and removal
in different bottom gas-stirred ladles has been conducted. The unsteady, three
dimensional, isothermal, multiphase computational fluid dynamics (CFD) model
was developed. A ladle with two bottom plugs was used in the study. Effects of plug separation angles (180° and
90°) and argon flow rate combinations (5/5 SCFM, 5/20 SCFM and 20/20 SCFM) were
investigated. The whole study can be divided into two parts: first, the flow
field, slag eye size and wall shear stress have been studied; second, inclusion
aggregation and removal in different ladles have been investigated. In the first
part, argon bubble breakup and coalescence has been considered. The slag eye
size was validated with plant measurement. When the flow rate increases, the size
of slag eye will increase while the wall shear stress increases as well. In the second part, a parametric study of
ladle design and argon flow rate on inclusion aggregation and removal has been
conducted. Turbulence shear collision shows the most dominant effect on
inclusion aggregation. The argon flow rate is positively related to inclusion
aggregation and removal. When the argon flow rate is fixed, a larger plug
separation angle shows higher inclusion aggregation and removal efficiency. </p><br>
| Identifer | oai:union.ndltd.org:purdue.edu/oai:figshare.com:article/11349695 |
| Date | 10 December 2019 |
| Creators | Xipeng Guo (8108240) |
| Source Sets | Purdue University |
| Detected Language | English |
| Type | Text, Thesis |
| Rights | CC BY 4.0 |
| Relation | https://figshare.com/articles/Numerical_Simulation_of_Inclusion_Aggregation_and_Removal_in_the_Gas-stirred_Ladle/11349695 |
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