FIELD: ferrous metallurgy. SUBSTANCE: method includes formation of initial iron smelt mass, loading iron-containing materials, and introducing fuel, oxygen-containing gases and necessary additives into smelt from below in the course of production phase. Reaction gas is afterburnt by way of blowing in oxygen-containing gases into gas space over the smelt, generated heat being transferred to smelt. Partial tapping is performed after production phase and remaining part of smelt is used as initial mass. This remaining mass constitutes 10-60% of total smelt mass contained in converter after production phase. According to invention, loading iron-containing material and blowing in oxygen-containing gas for afterburning are effected continuously from the top onto smelt surface in the course of production phase, oxygen content in oxygen-containing gas being maintained on the level not exceeding 50%. Degree of reaction gas afterburning during production phase is maintained in the range 50 to 70% and efficiency of heat transfer to smelt is about 90%. For reaction gas afterburning, air may be introduced through converter mouth heated to 1400 C and enriched to 25% oxygen. Iron-containing materials are loaded in the form of lumps which, prior to get into smelt, pass gas space. oxygen-containing is introduced by means of blowing means disposed inside converter and/or from outside through converter mouth. Smelt tapping is performed portion-wise producing iron-carbon alloy with 0.2-4.2% carbon. Slag-forming components are blown into smelt below fusion surface. Chill-cast pig is either treated with intermediate cooling to produce hard cast iron or directed into another converter for steel production. As iron- containing material, reduced iron ore, sponge iron, iron ore pellet, and various-size metal scratch are loaded into converter as mixtures or as individual charge. Gas intake is controlled in the range 10 to 100 cu. m/h. oxygen-containing gas from the top is blown with speed 300-700 m/s, advantageously 300-500 m/s, which provides their speed at the moment of impact with central part of fusion surface 50-150 m/s. EFFECT: enhanced efficiency of process. 13 cl, 1 dwg
