METHOD OF PRODUCING LIQUID CAST IRON FROM DRI-PRODUCT Russian patent published in 2024 - IPC C21B13/12 

FIELD: metallurgy.

SUBSTANCE: present invention relates to a method of producing liquid cast iron, which includes the following steps: i) obtaining product (1) of direct reduction iron (DRI-product) with an iron content of at least 75.0 wt.%, a carbon content of at least 0.10 wt.%, as well as with content of acidic and basic slag components, selected from a group comprising CaO, SiO₂, MgO and Al₂O₃, at most 15.0 wt.%, ii) feeding DRI-product (1) with the addition of slag-forming agents (2) to electric melting device (3), iii) optionally feeding additional iron and/or carbon-containing components (5) into electric melting device (3), iv) melting DRI-product (1), as well as, optionally, additional iron and/or carbon-containing components (5) in the presence of slag-forming components (2) so that liquid phase (6) of cast iron and liquid slag phase (7) are formed, v) controlling slag phase (7) so that it has basicity according to (CaO+MgO/SiO₂) from 0.95 to 1.5, vi) tapping liquid phase (6) of cast iron, and vii) tapping and granulating slag phase (7).

EFFECT: method of producing liquid cast iron from DRI-product.

13 cl, 3 dwg