FIELD: metallurgy of non-ferrous and precious metals; production of antimony trioxide at accompanying separation of precious metals into self-contained commercial product.
SUBSTANCE: antimony sulfides from concentrate are dissolved by acid leaching-out with antimony pentachloride solution; one part of antimony trichloride solution is directed for extraction of antimony and other part is directed for making the leaching-out solution. Sulfur is removed from insoluble residue and gold head and gold-containing concentrate are separated by gravitation concentration method.
EFFECT: increased extraction of antimony and precious metals.
15 cl, 3 tbl, 1 ex
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