IRON PRODUCTION METHOD Russian patent published in 1994 - IPC

FIELD: metallurgy. SUBSTANCE: method provides for use of new components, change components ratio during molten bath processing as in a ladle, as in a mold. Charge is loaded in furnace, bring the molten bath up to given temperature, exercise modification of metal by in series addition of modifying mixtures at the first stage - in a ladle, at the second stage - in a mold. Modification in the ladle is exercised by a mixture, that has compositions of refractory metals, inoculator, made as ultra-dispersed powder or its composition, and cryolite in amount of 0.020 - 0.095 % of molten metal weight. Modification in a mold is exercised by addition in a molten bath of mixture, that has coke and one or several components from group of calcium-silicon, ferrosilicon in amount of 0.15 - 0.45 kg/ton. Composition of refractory metals, inoculator are added in ratio of 100 : (1 - 10). Complex modification is exercised in a mold by coke addition together with calcium-silicon and/or ferrosilicon, taken in ration of 1 : (1 - 5). EFFECT: method provides for production of ingots good for processing with high strength, firmness and plasticity. 4 cl, 2 tbl