METHOD OF PROCESSING IN OXYGEN CONVERTER OF LOW-SILICEOUS VANADIUM-BEARING MOLTEN METAL Russian patent published in 2015 - IPC C21C5/28 

FIELD: metallurgy.

SUBSTANCE: invention relates to ferrous metallurgy, namely, to the method of processing in oxygen converter of low-siliceous vanadium-bearing molten metal. The method includes pouring of vanadium-bearing cast iron, loading of solid charge materials, addition of solid oxidizer, top or combined blowing with oxidizing gas, tapping of molten steel and vanadium slag. The vanadium-bearing molten metal is vanadium-bearing cast iron with the silicon and titanium concentration 0.01-0.10% of each. Oxygen devanadation is performed by flux-free monoprocess down to the content of carbon in metal 0.01-0.10% at the temperature of metal and slag at the end of blowing 1600-1700°C and the content in slag Fe_tot. = 30-45% and CaO = 0.1-3.0%. The proposed solution allows to get standard low-phosphorous vanadium slag with high concentration of V₂O₅ - 18-30%, more suitable for extraction from it pure vanadium pentoxide.

EFFECT: invention implementation allows to improve the qualitative characteristics of steel.

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