METHOD OF EXTRACTION OF MOLYBDENUM, NICKEL, COBALT, OR MIXTURES THEREOF FROM USED OR REGENERATED CATALYSTS Russian patent published in 2012 - IPC C22B7/00 C22C33/04 

FIELD: metallurgy.

SUBSTANCE: invention describes a method for extracting metals from used or regenerated catalysts based on aluminium containing at least one metal selected from the group consisting of molybdenum, nickel, cobalt, or mixtures thereof, in an electric-arc furnace containing multiple electrodes, equipped with a bottom and containing liquid cast iron fusion, covered with liquid slag. The used or regenerated catalysts are added to the fusion contained in an electric-arc furnace, then the dosed lime is added so as to obtain slag with a ratio of CaO to Al₂O₃ between 0.7 and 1.3, the fusion is stirred with gas supply to avoid the formation of crusts, and catalysts are smelted in a furnace to produce molten ferroalloy.

EFFECT: obtaining of a market alloy with low content of manganese and low content of sulfur and phosphorus at a high output of molybdenum and nickel.

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