Fundamentals of Green Steel Production: On the Role of Gas Pressure During Hydrogen Reduction of Iron Ores.

ABSTRACT: Out of the multitude of researched processing routes for sustainable ironmaking, hydrogen-based direct reduction and hydrogen plasma smelting reduction (HyPSR) are currently the most promising candidates for a successful industrial application. Both processes operate under gaseous atmospheres, which turn the partial and absolute pressure of hydrogen into a relevant process parameter. Here, we present first insights into the influence of total pressure and concentration of hydrogen on the reduction of hematite, focusing on the more pressure-sensitive route (HyPSR). The effect of pressure on the dissociation of H₂ molecules into metastable H atoms or H⁺ ions,- and the overall hydrogen utilization is discussed using a thermodynamic approach. Validation experiments were c

SUBMITTER: Souza Filho IR 

PROVIDER: S-EPMC10282048 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature