On iron reduction from magnetite by gaseous reducing agents

The chemical process of iron reduction from magnetite by gaseous reducing agents is the basis MIDREX technology implemented at Oskol Electrometallurgical Plant (OEMK). In paper, this was modeled using TERRA software package developed Bauman Moscow State Technical University. During simulation, thermodynamic system Fe‒С‒О‒Н analyzed constant temperature (900 °C) and gas pressure (0.2026 MPa). Mixtures carbon monoxide hydrogen in different ratios, as well individual components natural hydrocarbon gases, were used agents. compositions estimated gross formula С р О r H q , where p are stoichiometric coefficients. results calculations expenses m necessary for complete magnetite, which corresponded to degree metallization φ = 1. future, values evaluate abilities various mixtures, – determine required these mixtures reduction. Subsequent analysis showed that machine calculation value can be approximated with a small error (up 0.001) C partial costs reduction, respectively, O oxygen consumption oxidation. It also established parameters depend on interrelated accordance equation K equilibrium “water reaction” CO + 2 simultaneously occurring phase. parameter actually independent numerically equal (–4/3) moles per 1 mole iron. arguments characteristic molecular compounds accompanied appropriate practice OEMK, V taken into account, measured cubic meters ton sponge forecast performed formula: general, proposed algorithm correctly applied range 800 900 °C. Possible variations working will not require significant adjustments results.