HIGHLY EFFICIENT MOLTEN IRON ALLOY REFINING METHOD

This molten iron alloy refining method is for refining a molten iron alloy while blowing oxygen to a molten iron alloy bath in a converter, wherein when a direct current is supplied between a first electrode disposed above the molten iron alloy bath and a second electrode disposed in contact with the molten iron alloy bath, at least one of formulas (1)-(4) is satisfied, where IP [A] represents the magnitude of the average of the direct current during a current passage period in which the current is passed, IP' [A] represents the magnitude of the average of the direct current during a current passage period within one minute immediately before the blowing of oxygen is stopped, Ws [t] represents the amount of molten steel in the converter, and As [m2] represents the area of the internal cross-section of the furnace at the belly thereof. (1): IP>=0.125*Ws. (2): IP>=1.5*As. (3): IP'>=0.125*Ws. (4): IP'>=1.5*As. 该熔融铁合金的精炼方法，是在向转炉内的熔融铁合金浴送氧的状态下精炼熔融铁合金的方法，在配置于所述熔融铁合金浴上方的第一电极与配置成与所述熔融铁合金浴接触的第二电极之间供给直流电流，在将流通所述直流电流的通电