High Temperature Diffusion Processes at the Metal/Slag Interface

Agnieszka Bogusz; Patrick J. Masset

doi:10.4028/www.scientific.net/DDF.323-325.115

Paper Titles

Study of the Reactive Dynamics of Nanometric Metallic Multilayers Using Molecular Dynamics : The Al-Ni System
p.89

Atomistic Simulation of Clustering and Annihilation of Point Defects in Molybdenum
p.95

Multiscale Modelling of Morphological Evolution of Rough Surface during Superficial, Volume and Evaporation-Condensation Diffusions
p.101

Simulation of Metal/Oxide Interface Mobility: Effects of Mechanical Stresses on Geometrical Singularities
p.109

High Temperature Diffusion Processes at the Metal/Slag Interface
p.115

Modeling of Fractional Diffusion on a Catalytic Particle under Different Flow Conditions
p.121

Modeling of Multi-Phase Solid State Reactions-Case of IMC Growth
p.127

Fractal Dimension of Grain Boundary during Heating Comparison between Images Analyses and Monte Carlo Simulation
p.133

A Reactive Force Field Molecular Dynamics Simulation Study of Corrosion of Nickel
p.139

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High Temperature Diffusion Processes at the Metal/Slag Interface

Abstract:

The interface metal/molten oxide is of interest for several high temperature processes (metallurgy, gasification). The exchange reactions occurring at the interface between the metal and the molten slag are complex and up to date not well understood. More generally, this is of importance for the understanding of the exchange reaction kinetics between one metallic compound (solid or liquid) and an ionic one (slag). This work proposes a theoretical approach which takes into account the effect of speciation in the slag on the diffusion process of the species in the two phases and the redox reaction occurring within the vicinity of the interface. The systems investigated consist of Fe and CaO-SiO₂ without convection. The concentration profiles of silicon and iron oxide in both parts were calculated. The effect of impurities present in metal phase such as sulphur in the molten slag was investigated. This provides a basis of comprehensive approach for the purification of metal and a better understanding of processes at metal/oxide interface.