3D Integrated Modeling of Supersonic Coherent Jet Penetration and Decarburization in EAF Refining Process

Abstract

The present study proposes a complete 3D integrated model to simulate the top-blown supersonic coherent jet decarburization in the electric arc furnace (EAF) refining process. The 3D integrated model avoids the direct simulation of the supersonic coherent jet interacting with the liquid steel bath and provides a feasible way to simulate the decarburization in the liquid steel-oxygen two-phase reacting flow system with acceptable computational time. The model can be used to dynamically predict the details of the molten bath, including 3D distribution of in-bath substances, flow characteristics and bath temperature and provide a basis for optimizing the decarburization rate or other required parameters during the refining process.

Electric Arc Furnace Stirring: A Review

“…Guo et al [ 15 ] considered two decarburization rates, low at 0.002%C min −1 , equivalent to 0.034 kg s −1 , and high, equivalent to 0.136 kg s −1 . Chen et al [ 25 ] reported the average velocity for a decarburization rate of about 0.02% min −1 , comparing the velocity only due to oxygen injection and the combination of oxygen and CO stirring. Table 4 summarizes the average velocity of liquid steel only due to CO stirring.…”

Effects of EAF Operations on Water‐Cooling Panel Overheating

“…The coherent jet model used in this project is based on a coherent jet model developed by researchers before. [ 12–14 ] This model is composed by a series of governing equations and models to simulate the flow field with a consideration of coherent jet injection and freeboard post‐combustion. Compared to the previous model, the coherent model used in this project is simplified to reduce the computation resource, for the reason that the liquid bath is not considered in this project, and coherent jet penetration ability is not that important.…”

Special Issue on “Process Modeling in Pyrometallurgical Engineering”

“…Chen et al [27] developed a 3D mathematical model of the interaction of the supersonic coherent jet with the steel bath. The model predicts the decarburization kinetics, including the distribution of the in-bath components, flow patterns, and bath temperatures, and can be used to optimize the refining process.…”