METHOD OF SMELTING OF FERROALUMINUM WITH THE REDUCED CONSUMPTION OF THE PURE ALUMINUM Russian patent published in 2006 - IPC C22C33/04 

FIELD: metallurgy; methods of production of ferroaluminum with the reduced consumption of the pure aluminum.

SUBSTANCE: the invention is pertaining to the field of metallurgy, in particular, to the versions of smelting of ferroaluminum used for a steel deoxidation. In the first version the process of smelting of the ferroaluminum is conducted in two separate induction furnaces by separate melting of the steel and aluminum scrap at the temperature exceeding the fusion point of the each particular scrap by 50-70°C, tapping of the melt of aluminum with a fluidic protecting slag into the induction furnace containing the melt of the steel, heating of the melts within 5-10 minutes up to their complete stirring. In the second version the process of the ferroaluminum smelting is conducted in two induction furnaces by the separate melting of the aluminum scrap and the steel scrap, which is added by batches in amounts determined by the charge smelting process to the residual smelt, remained after the previous smelt of the ferroaluminum, tapping of the aluminum melt with the fluidic protecting slag into the induction furnace containing the melt of ferroaluminum with the low content of aluminum, heating within 5-10 minutes up to the complete stirring. The invention ensures reduction of consumption of the pure aluminum into the melting loss up to 6 %, a decrease of the duration of the smelting process by 2-2.5 hours with the corresponding growth of the volumes of the production.

EFFECT: the invention ensures reduction of consumption of the pure aluminum into the melting loss up to 6 %, a decrease of the duration of the smelting process by two-two and a half hours with the corresponding growth of the volumes of the production.

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