FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy immediately dealing with electroslag remelting. The charge mixture contains the following components (wt %): wastes of production of pure niobium 62.0-70.0 containing niobium intermetallide (NbAI3) - 40.0-45.0%; iron scale - 20.0-28.0%; a slag-forming constituent - 1.0-6.0%; alabaster - 1.0-12.0%. The pure niobium production wastes contain the following components (wt %): niobium intermetallide - 40.0-45.0%; metallic niobium - 10.0-20.0%; alumina - 5.0-25.0%; impurities - balance.
EFFECT: invention enables increased efficiency of the ferroniobium production process due to improved extraction of niobium from the charge mixture combined with reduction of the charge mixture total mass due to primary aluminium exclusion therefrom).
3 cl, 1 ex, 1tbl
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