Determining of iron oxide pellet porosity using image analysis and its effect on the reduction behaviorEduardo Borges Matos, Tero Vuolio, Timo Fabritius, Pasquale Cavaliere and Maycon AthaydeMatériaux & Techniques, 114 1 (2026) 102DOI: https://doi.org/10.1051/mattech/2025026