STEEL MELTING METHOD Russian patent published in 2023 - IPC C21C5/28 C21C7/64 

FIELD: ferrous metallurgy.

SUBSTANCE: more specifically to the production of steel in a converter. To smelt the intermediate product, a metal charge is introduced into the converter in an amount of at least 65% of its total mass required for melting; purging is completed when oxygen is consumed 9.0-30.0 nm³/t of intermediate product and the intermediate product is drained, after which, if necessary, slag-forming agents are added to the converter and the metal charge is loaded in an amount of 0-35% of its total mass required for melting, the semi-finished product is refilled, oxygen is blown, during which calcium and/or magnesium containing materials are added to obtain a slag basicity of 2-4, while blowing is completed after consumption of 16.0-35 nm³/t of steel, after which the melt is tapped.

EFFECT: possibility to produce steel in a converter with a low phosphorus content of not more than 0.005 wt.%.

8 cl, 1 ex, 1 tbl