PROCEDURE FOR COMBINED PROCESS OF CHARGE OF SLAG SCULL WITH MELTING STEEL IN CONVERTER AT REDUCED CONSUMPTION OF IRON Russian patent published in 2010 - IPC C21C5/28 C21C5/44 

FIELD: metallurgy.

SUBSTANCE: procedure consists in leaving slag of preceding melting in converter, in charging lime on slag, in charging slag scum, in scrap loading, in iron casting, in blasting bath with gaseous oxidiser, for example oxygen, and in charge size addition of manganese containing materials and lime at ratio 1: (0.04-0.40). There is used iron with contents of manganese not over 0.25 % at ratio Si/Mn≥1.0. Additionally magnesium containing material and carbon containing fuel are added; also magnesium containing material, carbon containing fuel and lime for finishing slag scum are added at ratio 1: (0.2-0.6):(0.4-0.6) correspondingly, notably, 55-70 % of common consumption of carbon containing fuel is added into load, 15-25 % in the process of oxygen blasting, and 5-20 % for scum.

EFFECT: increased efficiency of slag scum charge.

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