METHOD OF SMELTING OF VANADIUM-BEARING ALLOYS Russian patent published in 2009 - IPC C22C33/04 

FIELD: metallurgy.

SUBSTANCE: invention relates to the ferrous metallurgy field, particularly to manufacturing of ferroalloys, particularly to creation of methods of smelting of vanadium-bearing alloys by out-furnace aluminothermal process from vanadium slags. In method it is implemented preparation of charge containing vanadium-bearing component and aluminium, partial or total its loading into melting hearth, ignition of charge, reduction of charge oxides by aluminium, isolation of melts, discharge of slag and cooling of vanadium-bearing alloy. In the capacity of vanadium-bearing component it is used converter vanadium slag, at preparation into content of charge it is introduced mixture of lime and magnesite in amount 5-20% of weight of introduced aluminium at keeping in it ratio of calcium oxide to magnesium oxide in the range 1:(1-0.5), herewith all charge before loading into melting hearth is heated up to temperature 200-550°C.

EFFECT: invention provides receiving of vanadium-bearing alloys from converter vanadium slag, passing stage of chemical extraction from it of five-oxide of vanadium and to reduce by it cost price of vanadium unit in finished product ensured by improvement of physicochemical properties of final slag, particularly reduction of viscosity and increasing of interfacial tension by means of changing of its content, temperature characteristics of charge, that provides acceleration and fullness of reduction process flows of following elements from charge.

1 ex, 3 tbl