Multiphase Flow Modeling of Slag Entrainment During Ladle Change-Over Operation

作者：Morales Rodolfo D; Garcia Hernandez Saul^*; De Jesus Barreto Jose; Ceballos Huerta Ariana; Calderon Ramos Ismael; Gutierrez Enif

来源：Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science, 2016, 47(4): 2595-2606.

DOI：10.1007/s11663-016-0663-4

Steel transfer from the ladle to a single-strand tundish using a conventional ladle shroud (CLS), and a dissipative ladle shroud (DLS) is studied during the transient period of ladle change-over operation. Fluid velocities and fluid flow turbulence statistics during this unsteady operation were recorded by an ultrasound velocimetry probe in a 1/3 scale water-oil-air analog model (to emulate steel-slag-air system). Reynolds stress model and volume of fluid model allow the tracking of water-oil, water-air, and oil-air interfaces during this operation. Velocity measurements indicate a very high turbulence with the formation of a water-air bubbles-oil emulsion. Flow turbulence and the intensity of the emulsification decrease considerably due to an efficient dissipation of the turbulent kinetic energy employing the DLS instead of the CLS. The modeling results indicate that DLS is widely recommended to substitute flow control devices to improve the fluid dynamics of liquid steel during this transient operation.

• 出版日期2016-8