Christopher Cooper, Bima Satritama
This work evaluates a hybrid ironmaking process that combines hydrogen direct reduction with in-flight hydrogen plasma reduction of iron ore powder using a new reactor, Swin H+ 2. The reactor uses a non-transferred DC arc plasma torch with continuous powder injection and was tested with up to 41 kW of electrical power and 9% H2-Ar plasma gas. The results suggest that controlling particle residence time is a major challenge for co-current in-flight plasma reactors. As a result, the optimal level of pre-reduction for in-flight systems differs from that for molten-bath reactors. Plasma-reduced iron was found to be less susceptible to reoxidation than direct-reduced iron. However, the current reactor design experienced product losses (>90%), limited metallization (<10%), and high specific energy consumption (≈67 kWh/kg of ore, before heat recovery).
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title={2026 Cooper Hydrogen Plasma Reduction Ironmaking},
author={Christopher Cooper and Bima Satritama},
year={2026},
language={en}
}TY - JOUR TI - 2026 Cooper Hydrogen Plasma Reduction Ironmaking AU - Christopher Cooper AU - Bima Satritama PY - 2026 LA - en ER -
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