Abstract
Electrochemical reactions always occur at the electrode–slag and slag–metal melt interfaces during the electroslag remelting (ESR) process. However, those reactions together with the ion transport phenomenon in the molten slag region are still poorly understood. A numerical model considering both the ion transport and the electrochemical reactions is demanding. For this purpose, a numerical model is proposed. The ion transport is modeled by solving the Poisson–Nernst–Planck (PNP) equations, while the kinetics of the reaction at the slag–metal interface is modeled with the well-known “Butler–Volmer” formula. Demonstratively, a one- dimensional case is calculated: a DC electric current is applied to a molten multi-ion slag (CaF2–FeO) between the anode and the cathode. The modeling results show that the redox reaction occurs only for the ferrous ion (Fe2+), not for other ions at low current density ( 5 kA m−2) may not take place, although some researchers have proposed such a hypothesis. Therefore, further research steps are suggested to verify this point so that the model is fully applicable for the industrial ESR process.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
