The influence of energetic and chemical-catalytic intensification of iron reduction on the oxidizability of the metallized product
DOI:
https://doi.org/10.15802/tpm.3.2025.08Keywords:
solid-phase reduction, passivation, oxidation state, catalytic additives, variable electromagnetic field, mechanism of EMF influenceAbstract
The purpose of the work is to analyze the influence of the electromagnetic field and catalytic additives on the parameters of the oxidation process of reduced sponge iron. Methodology. The experiments were carried out in an alternating magnetic field using the thermogravimetric method. The oxidation process was studied with the determination of the temperature of the onset of oxidation and the degree of oxidation. Results. The results of laboratory experiments indicate the influence of the electromagnetic field on the oxidation process of solid-phase iron reduction products. The introduction of catalytic additives into the reducing charge has a positive effect on the oxidation of the product. The low-frequency field increased the temperature of the onset of oxidation and reduced the degree of oxidation. Scientific novelty. The influence of the electromagnetic field (EMF) on the temperature of the onset of oxidation, the degree and rate of oxidation of the metallized product was experimentally confirmed. The mechanism of the passivating effect of EMF and catalytic additives on reduced iron was proposed. Practical significance. The obtained research results allow to reduce losses during oxidation of metallized iron powder.
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