ASSESSMENT OF THE PROSPECTS FOR THE DEVELOPMENT OF METALLURGICAL MINI-FACTORIES

Currently, the development of ferrousmetallurgy is movingtowards the construction of mini-factoriesoperatingon the basis of electric steelmakingwith the use of scrapas the mainraw material.Theformat under consideration differs radicallyfrom the classicalscheme of integratedplants. The newschemegivesspecialists a relativefreedom of action,allows them to effectivelycompetewith giants,reachingthesameorlowerlevel of productioncosts.Anoverview of existingmini-factoriesin the RussianFederation is presented. The industrialexperienceand the achieved performance indicatorsof the OskolElectro-MetallurgicalCombine,whichis the firstenterprise of non-miningmetallurgyoperatingusingpre-metallizedraw materials, arereviewed.Theeconomicprerequisites for the construction of mini-electric steelmakingplantsinRussia are presented,basedon a comparison of the characteristics of integratedmetallurgicalplantsandmini-plantsoperatingonscrap metal. The process of obtainingdirect reduction iron by Midrex,whichaccounts for abouthalf of theproductioncapacityof metallized pelletsandbriquettes, is brieflydescribed, and itsmainadvantages are noted. The processofobtainingmetallizedraw materials for electric steelmaking is carried out usingconvertiblenaturalgas, the dynamics of pricesincomparisonwithelectricityprices is analyzed.An optimal scheme of domestic electric steelmaking production is proposed using metallized iron ore concentrate, steel scrap and liquid cast iron as raw materials. A variant of remelting rich iron ores in the production of cast iron and high-carbon steels, which are widely used in the mining, chemical and metallurgical industries, is described.

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