METHOD OF RECEIVING OF CHROME-BEARING ALLOY Russian patent published in 2009 - IPC C22C33/04 

FIELD: metallurgy.

SUBSTANCE: invention can be used for processing of chrome ore, concentrates and aluminium-bearing wastes of non-ferrous metallurgy. In the method in the capacity of aluminium-bearing material it is used preprepared aluminium-bearing wastes from manufacturing of secondary aluminium in amount 0.6-1.1 wt % per 1 wt % of content Cr₂O₃ in chrome-ore concentrate. Isolation of received in furnace melt is implemented with blending during 10-15 minutes, after which it is preliminary pumped out in slag pan 70-90% of dross major part from the total dross mass, then it is pumped out part of the rest slag into metallic reservoir, isolated during 3-5 minutes and discharged the rest part and metal to the same metallic reservoir.

EFFECT: invention provides developing of the new technology of chrome-bearing alloy, providing substitution of expensive reductant by significantly cheaper aluminium-bearing wastes from the aluminium production and increasing of extraction ratio of chrome into the metal.

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