Angelo Paziente
Ammonia-based direct reduction of iron ores: modelling and experimental assessment.
Rel. Marta Gandiglio, Luca Mastropasqua, Alessandro Magnino. Politecnico di Torino, Master of science program in Energy And Nuclear Engineering, 2024
Abstract
The iron and steel industry is a strategic sector of the EU economy, producing a material that is crucial to most of the EU’s industrial ecosystems while being responsible for approximately 5% of the EU’s total CO₂ emissions. Investment decisions made in the next decade must align with the EU’s climate targets to avoid the risk of stranded assets and locking in CO₂ emissions beyond 2050. The industry is focusing on developing direct reduced iron (DRI) technology, which currently relies on natural gas for reducing iron ore and represents 5% of global steel production outside the EU, because the application of green reducing agents in direct reduction furnaces is one of the most promising strategies for reducing CO₂ emissions in steel production.
In fact, hydrogen has the potential to replace fossil fuels in the reduction of iron oxide pellets to pure iron, thus eliminating CO₂ emissions during the most carbon-intensive stage of production
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