|About this Abstract
||Liquid Metal Processing & Casting Conference (LMPC 2019)
||Liquid Metal Processing & Casting
||Modeling Electrochemical Transport of Ions in the ESR Process
||Ebrahim Karimi Sibaki, Abdellah Kharicha, Menghuai Wu, Andreas Ludwig, J. Bohacek
|On-Site Speaker (Planned)
Numerous electrochemical reactions were suggested for chemical elements such as S, O, Al, and Fe to describe metal refinement mechanisms in the ESR. Electrochemical (Faradaic) reactions take place within the slag bath or at slag-metal-gas-mold interfaces. Specifically, those reactions are carried out at the liquid film under the electrode tip as well as at the droplet-slag interface. We propose a model for Faradaic reactions at those interfaces as well as electrochemical transport of ions in the bulk of slag. It is found that the intensity of the flow filed and the strength of electric field in the bulk of slag can significantly impact Faradaic reactions and consequently efficiency of metal refinement. Impacts of electrode polarity and electro-migration of ions are analysed. Based on modeling results some explanations are suggested for theses phenomena in DC ESR: higher melt rate for positive polarity, and formation of FeO layer under electrode tip.
||Definite: At-meeting proceedings