Lignosteel

Important results from the project

The project has verified that lignin-based carbons can replace fossil carbons as a reducing and carburizing agent in steel production. The concept was successfully demonstrated in pilot scale. Key learnings on pelletizing, pre-treatment, and carbonization strengthen the technical understanding and support future scale-up and industrial use. The project confirms that bio-based carbons from lignin is an alternative in the transition towards a more sustainable and fossil-free steel industry.

Expected long term effects

Replacing fossil coal with lignin in steel production reduces fossil carbon dioxide emissions, enables a fossil-free steel industry, and strengthens the industry´s climate transition. Lignin has a high carbon content, making it particularly advantageous as a carbon source for bio-based carbon. The project opens up new value chains between the forestry and steel industries and demonstrates the potential of bio-based raw materials for a sustainable material production in the future.

Approach and implementation

The project consisted of three partners: the research institute RISE, the lignin producer Fibenol and the metal powder producer Höganäs. Fibenol supplied the project with various hydrolysis lignins for evaluation. RISE carried out the pelletization and carbonization experiments with the lignin. The carbonized lignin was evaluated, with good results, as a carbon source in steelmaking by Höganäs. The cooperation between the parties has been rewarding and contributed to the progress of the project.