METHOD FOR REFINING MOLTEN IRON ALLOY Russian patent published in 2022 - IPC C21C5/36 F27D19/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to the field of metallurgy and can be used for refining a molten iron alloy bath in a converter furnace. In the method, the direct current supply between the first electrode located above the molten iron alloy bath and the second electrode located in contact with the molten iron alloy bath is carried out by controlling the values of I_P [A] or I_P’ [A] in accordance with the values of W_s [t] or A_s [m²], and I_P [A] is the value of the average DC value during the time of DC supply to the slag , I_P’ [A] is the value of the average DC value when it is supplied to the slag for 1 min immediately before the oxygen supply stops, W_s [t] - the amount of molten steel in the converter furnace, and A_s [m²] is the internal cross-sectional area of the furnace in the bottom of the furnace.

EFFECT: invention makes it possible to reduce the content of grain iron in the slag and improve the efficiency of slag reforming or processing for the extraction of metallic beads.

7 cl, 4 dwg, 3 tbl