METHOD OF PRODUCING SYNTHETIC COMPOSITE SEMI-FINISHED MATERIAL FOR STEEL REFINING Russian patent published in 2012 - IPC B22D3/00 C22B1/00 

FIELD: process engineering.

SUBSTANCE: invention relates to metallurgy. Proposed method comprises adding solid oxidising agent into moulding tool, pouring iron-carbon melt therein, cooling hybrid mix down, moulding the ingot and extracting it from moulding tool. Consumption of solid oxidising agent is defined by relationship where g_mo is consumption of said agent per one ton of iron-carbon melt, kg/t, Δ(Si, Mn, Cr, V, Ti, P) is the number of elements in said melt oxidised by said agent, wt %; 1.14; 0.29; 0.46; 0.78; 0.67; 1.29; 1.33 are element-to-oxygen stoichiometric ratio for oxidation of said elements, kg/kg; and C_FeO are amounts of iron oxide and monoxide in solid oxidising agent, respectively, wt %; 0.3 and 0.22 are mass fraction of oxygen in iron oxide and monoxide in solid oxidising agent; λ is fraction of changing into gas phase and lost with off-gases; (1-λ,) is fraction of oxygen retained in composite material iron oxide after thermal dissociation; 1000 is weight of initial iron-carbon melt, kg.

EFFECT: faster refining.

2 tbl, 2 ex