Rahul Sarkar, Hong Yong Sohn
In this work, a kinetic model based on solid-state diffusion is formulated to describe the growth of the hercynite (FeAl2O4) spinel formed as a result of the interaction between FeO and Al2O3 under conditions relevant to the novel flash ironmaking technology (FIT) developed at the University of Utah. Experiments were conducted with FeO powders and pure Al2O3 refractory in the temperature range of 1200 - 1400°C under relevant gas atmospheres. Analyses of reacted samples using XRD, SEM-EDX, and EPMA techniques demonstrated that the proposed kinetic model appropriately describes the growth of the hercynite spinel layer. The results showed that the growth followed parabolic rate constants (k1), with effective diffusivity (Deff) values determined at the experimental temperatures. Additionally, the activation energy for solid-state diffusion was calculated to be 268 kJ/mol.
@article{12e96718-d996-4eee-98a3-0c441cd9f8d2,
title={A KINETIC MODEL FOR INTERACTION OF IRON (II) OXIDE WITH PURE ALUMINA REFRACTORY UNDER FLASH IRONMAKING CONDITIONS},
author={Rahul Sarkar and Hong Yong Sohn},
year={2026},
language={en}
}TY - JOUR TI - A KINETIC MODEL FOR INTERACTION OF IRON (II) OXIDE WITH PURE ALUMINA REFRACTORY UNDER FLASH IRONMAKING CONDITIONS AU - Rahul Sarkar AU - Hong Yong Sohn PY - 2026 LA - en ER -
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