The effect of H2 ratio (0–70 vol%) on the softening–melting behaviours of vanadium titanomagnetite pellets in H2–CO gas mixtures has been investigated experimentally in the simulated H2-rich oxygen blast furnace conditions. The feasibility of vanadium titanomagnetite pellets smelted in an H2-rich oxygen blast furnace was discussed from gas utilisation rates, slag–iron separation performances, slag foamabilities, hot metal qualities, etc. The results indicate that although the cohesive zone range increases with the increase of H2 ratio in gas mixtures, the permeability of the feed bed is improved greatly. The H2 utilisation rate increases with the increase of H2 ratio. Moreover, the formations of the slag foaming are minimised with the increase of H2 ratio. H2 in the reduction gases also promotes the reduction of vanadium oxides and titanium oxides, which increases the [V] content in dripping iron, and results in more TiC generations which severely deteriorates the slag–iron separation performances.
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