The Use of an Enhanced Eulerian Deposition Model to Investigate Nozzle Clogging During Continuous Casting of Steel

被引:29
|
作者
Ni, Peiyuan [1 ]
Tord, Lage [1 ,2 ]
Jonsson, Ingemar [1 ,2 ]
Ersson, Mikael [1 ]
Jonsson, Par Goran [1 ]
机构
[1] KTH Royal Inst Technol, Dept Mat Sci & Engn, Div Appl Proc Met, S-10044 Stockholm, Sweden
[2] Swedish Def Res Agcy, FOI, Div CBRN Def & Secur, S-90182 Umea, Sweden
关键词
GATE TUNDISH NOZZLES; TURBULENT-FLOW; ARGON BUBBLES; LIQUID STEEL;
D O I
10.1007/s11663-014-0145-5
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Nozzle clogging caused by the build-up of non-metallic inclusions on ceramic walls is a serious industrial problem during continuous casting of steel. The current theoretical study uses the extended Eulerian model to predict the inclusion deposition rate in a submerged entry nozzle (SEN). The model considers Brownian and turbulent diffusion, turbophoresis, and thermophoresis as transportation mechanisms. First, the steel flow in a tundish was simulated using a three-dimensional CFD model. The obtained flow parameter in a SEN was then put into the Eulerian deposition model to predict the deposition rate of non-metallic inclusions. Thereafter, the deposition rates of different-size inclusions in the SEN were predicted and compared. The result shows that the steel flow is non-uniform in the SEN of the tundish. This leads to an uneven distribution of the inclusion deposition rates at different locations of the inner wall of the SEN. In addition, large size inclusions among the size of inclusions considered show a large deposition rate, due to the strong effect of turbophoresis.
引用
收藏
页码:2414 / 2424
页数:11
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