METHOD OF STEELMAKING IN BASIC OXYGEN CONVERTER Russian patent published in 2018 - IPC C21C5/28 

FIELD: metallurgical engineering.

SUBSTANCE: method includes loading of scrap metal and iron-containing product for the processing of waste slag, consisting of metal and slag constituents, loading of lime and magnesian flux, casting of cast iron, purging the bath with a gaseous oxidant. In the process of loading lime and magnesia flux, carbon-containing material is additionally introduced at the ratio of the masses of the carbon-containing material and the iron-containing product of the waste slag processing equal to 1:(5-10), and after casting of the cast iron, the melt is mixed with a mixture of neutral gas and oxygen in the ratio 1:(0.3-1.0).

EFFECT: increase in the yield of the usable metal due to the reduction of iron from the slag component of the iron-containing product of slag waste processing.

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