COMPOSITE MATERIAL FOR METALLURGICAL CONVERSION AND A METHOD FOR ACHIEVEMENT THEREOF Russian patent published in 2004 - IPC

FIELD: ferrous metallurgy.

SUBSTANCE: material comprises conglomerate with characteristic geometric dimensions formed by charge capable of providing endo-exothermic reactions and comprising metal-containing additive, carbon-containing, slag-forming, and oxidized iron-containing materials. Metal-containing additive may be selected from iron-carbon alloy and iron cast and/or metallic scrap. Oxidized iron-containing material contains iron oxides in amounts 20 to 100 wt %. Ratio of summary outside surface of oxidized iron-containing material to weight of iron-carbon alloy ranges from 5 to 500 m²/t. Ratio of summary amount of oxidizable charge constituents to amount of oxygen in iron oxides ranges from 0.3 to 3.6 at following proportions of constituents, wt %: oxidized iron-containing material 5-35, slag-forming material 0.2-30, carbon-containing material 0.1-10, and iron-carbon alloy or its combination with cast and/or metallic scrap - the rest. Preparation of composite material comprises providing loose filler containing oxidized iron-containing material, carbon-containing and slag-forming materials into fraction 5-25 mm; balanced moistening, adding above-indicated metal-containing additive, stirring, and molding of conglomerate in the form of briquettes or ingots. Invention allows shortening metal fusion purging time with more uniform distribution of heat over smelting periods, increasing purity and quality of steel, reducing level of iron oxides in slag, , increasing yield of liquid steal, reducing consumption of refractory materials, and increasing uniformity in distribution of composite material components in briquettes and ingots.

EFFECT: increased process efficiency.

19 cl, 5 tbl, 2 ex