METHOD OF MELTING METAL IN CONVERTER Russian patent published in 2016 - IPC C21C5/28 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy, particularly, to metal melting in converter. Method includes charging scrap, casting iron, blowing metal melt with oxygen, adding magnesium-containing slag-forming materials during blowing process, blowing slag left in converter after discharge of metal therefrom with nitrogen. Prior to blowing molten metal with oxygen, method includes determining amount of magnesium-containing slag-forming materials deposited during blowing based on predicted data on composition of slag before outlet of melt and value of slag corrosion of converter lining. Molten metal is then blown with oxygen, in direction of which is added magnesium-containing slag-forming materials. Metal is tapped from converter and before blowing slag left in converter with nitrogen, magnesium- and carbon-containing materials are deposited thereon in an amount of 1-3.0 and 0.3-1.0 t respectively. Magnesium- and carbon-containing materials used are dried dolomite and coke. Slag is blown with nitrogen for 1-8 minutes.

EFFECT: decreased consumption of magnesium-containing slag-forming materials.

3 cl, 1 ex