METALS EXTRACTION FROM SULFIDE MATERIALS Russian patent published in 2009 - IPC C22B3/06 

FIELD: metallurgy.

SUBSTANCE: invention relates to extraction method of ferrous metal from the sulfide material. Method includes stages of preparation acid aqueous halogenide solution, allowing oxidation potential, enough for oxidation of sulfide material and dissolution in solution of valuable metal, addition of the material into acid aqueous halogenide solution for that sulphide material would oxidised and valuable metal would dissolved and separation of valuable metal from oxidised sulphide material. Furthermore method of contaminant removing from polluted by admixtures sulphide material includes following stages: mixing of material in water solution, in which polyvalent variety with relatively high oxidation rate contaminant is oxidised, making it soluble in solution, with receiving of containing contaminants refined material and they are restored till relatively lower oxidation rate polyvalent variety and removing of contaminant from solution with simultaneous regeneration of polyvalent varieties till its condition with relatively high oxidation rate.

EFFECT: process simplification of consumption reduction of energy.

22 cl, 9 dwg, 25 tbl, 12 ex