Modeling on the Three-Dimensional Distribution of Inclusions in the Molten Steel of an Argon-Stirred Ladle

A three-dimensional numerical model for the steel-slag-argon multi-phase fluid flow and the collision, transport, and removal of inclusions in the steel was established to simulate the evolution of inclusions during the vacuum degassing process. The particle-size-grouping method was employed to determine the size distribution of inclusions. Three types of inclusions, namely Al2O3, MgO⋅Al2O3, and xCaO⋅yAl2O3, were studied. Simulated results indicated that MgO⋅Al2O3 inclusions were the most easily removed and little difference was existed between Al2O3 and xCaO⋅yAl2O3 inclusions. After 3,000 seconds, the average diameter of Al2O3, MgO⋅Al2O3, and xCaO⋅yAl2O3 inclusions was 3.43 μm, 2.49 μm, and 2.95 μm, respectively.

Zhentong Liu | Yanshan University
 

Jujin Wang | North China University of Technology
 

Lifeng Zhang | North China University of Technology