Abstract
We reduced a natural chromite under controlled geometrical and thermodynamic conditions. The reaction between graphite and chromite in argon at 1200 and 1400°C is apparently rate-limited by a step that either involves the reductant or the gas phase. The reduction of chromite in an H2-H2O mixture at 1200°C follows the parabolic rate law; i.e., it is rate-limited by diffusion in the oxide.
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