A Zero-Emission Process for Direct Reduction of Iron by Hydrogen Plasma in a Rotary Kiln Reactor
Project Innovation + Advantages:
Argonne National Laboratory (ANL) will demonstrate a novel process for reducing iron ore to iron that reduces cost, eliminates CO2 emissions, and increases efficiency. ANL’s process uses hydrogen (H2) plasma instead of carbon-rich coke or natural gas to reduce iron ore in a rotary kiln furnace, which will improve the thermodynamics and kinetics of iron ore reduction, potentially eliminate the need for iron ore pelletizing, and enable the process to run at a lower temperature. The team estimates that the combination H2 plasma-rotary kiln process can improve energy efficiency and potentially reduce CO2 emissions in the steel industry by more than one billion tons per year. Energy consumption could be reduced by 45% compared with the blast furnace process and by approximately 15% compared with a molecular H2-direct reduced iron process.
ANL’s hydrogen plasma rotary kiln reactor will reduce CO2 emissions and energy demand.