Pathways to decarbonizing steel

Hydrogen DRI

Hydrogen-based direct reduced iron (DRI) technology is a promising decarbonization pathway for steel production. Rebecca Dell explains that while DRI currently represents a small portion of global steel production, it offers significant emissions savings compared to traditional blast furnaces 1. However, challenges remain, such as the need for high-quality iron ore and the economic feasibility of hydrogen sourcing 2. Despite these hurdles, the potential for hydrogen DRI to reduce CO2 emissions is substantial, as it could lower emissions to under one ton of CO2 per ton of steel 3.

Everybody believes it will work. The only hesitations about it are there's two of them.

--- Rebecca Dell

The steel industry is optimistic about overcoming these challenges, with ongoing efforts to improve ore quality and reduce costs.

   

Electrification

Electrification methods offer another pathway to decarbonize steel production, drawing parallels with aluminum production. Rebecca Dell highlights the potential of direct electrification techniques, such as molten oxide electrolysis, which could use lower-grade ores and reduce energy consumption compared to hydrogen DRI 4. However, these technologies are less mature and face scalability challenges 5. Companies like Boston Metal are at the forefront, developing modular solutions that could facilitate rapid scaling once commercial deployment is achieved.

Direct electrification is the way to go. It's a question of, can we make it work, and at what cost?

--- Rebecca Dell

The success of these methods hinges on overcoming technical barriers and ensuring economic viability.