Metallurgical Properties of Pellets from Stoilenskii Deposit Concentrates

Abstract: The formation of the structure and metallurgical properties of pellets from Stoilenskii deposit concentrates with different degrees of enrichment is studied. As research results have shown, in non-fluxed pellets from re-enriched concentrate, the reducibility increases in comparison with the base values. The hot strength almost does not change, but the yield of fines decreases. An increase in the melting temperature range is observed: pellets from the base concentrate most fully meet the requirements for the softening-melting range under blast furnace smelting conditions. Pellets from the maximum enriched experimental concentrate have high hot strength and reducibility at an increased softening and melting temperature range relative to the base one. The performance of blast furnace smelting is more strongly influenced by the pellet reducibility, as well as the iron and waste rock content. In general, when optimizing the degree of iron enrichment in pellets, the reduction in coke consumption can reach 6.2% while increasing productivity up to 7.6%. © Allerton Press, Inc. 2023. ISSN 0967-0912, Steel in Translation, 2023, Vol. 53, No. 10, pp. 871–876. Allerton Press, Inc., 2023. Russian Text The Author(s), 2023, published in Stal’, 2023, No. 9, pp. 2–6.