Ammonia Direct Reduction of Iron Oxides — Preliminary Assessment

Decarbonization in the iron- and steelmaking industry is vital to achieving a net-zero economy as it contributes to 7% to 10% of global CO2 emissions. Considering the technology readiness, hydrogen-based direct reduction is amongst the most promising route for producing green steel despite some technical issues in storing, distributing and transporting hydrogen. Ammonia is considered an excellent hydrogen carrier due to its high hydrogen volumetric density, practical storage temperature, and its profound worldwide production quantity and supply chain. This paper discusses the feasibility of using ammonia as an iron oxide reductant, through a thermodynamic analysis and some preliminary experiments.

Tiara Triana | Swinburne University of Technology
 

Dr. Geoffrey Brooks | Swinburne University of Technology
 

Dr. M. Akbar Rhamdhani | Swinburne University of Technology
 

Mark Pownceby | CSIRO