METHOD OF SILICON AND FERROSILICON MELTING Russian patent published in 2020 - IPC C22C33/00 

FIELD: electrometallurgy.

SUBSTANCE: invention relates to electrometallurgy and is intended for use in silicon and ferrosilicon smelting. Shaping materials are continuously fed into the arc ore-thermal furnace, their fusion, carbon-thermal reduction of metals, blowing of gas through hollow electrodes, periodical discharge of melting products through the tap hole of furnace and continuous evacuation of furnace gases through a throat, during melting into zone of electric arc nitrogen is continuously blown as plasma-forming gas at the following ratio: V_N2=(0.05–0.20)V_CO, where V_N2 – the number of injected nitrogen, m³/t of silicon in alloy (0.05–0.20) – empirical coefficient, V_CO – amount of furnace gas generated in the furnace, m³/t of silicon in the alloy.

EFFECT: invention makes it possible to considerably intensify the melting process and to reduce specific power consumption per ton of alloy.

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