METHOD FOR MELTING STEEL IN ARC STEEL MELTING FURNACE Russian patent published in 1999 - IPC

FIELD: ferrous metallurgy, possibly steel melting in electric arc steel melting shops. SUBSTANCE: at oxidation period of melting by blowing bath with oxygen, significant part of metal is lost in burning because in zone of contact of oxygen jet with bath surface temperature reaches boiling point. Metal bath is blown through two points of metal heel equally spaced from vertical axis of furnace at keeping central angle between them no less than 90 deg. Oxygen is fed alternatively through one point of blowing at time interval 10-25 s at constant flowrate. Axes of oxygen jets are inclined relative to metal bath heel by angle 80-90 deg and they are directed to the same side. EFFECT: lowered metal loss in burning, reduced oxygen consumption and improved ecology condition. 1 ex