PROCEDURE FOR PROCESSING PERSISTENT URANIUM CONTAINING PYRITE AND VALUABLE METALS OF MATERIALS FOR EXTRACTION OF URANIUM AND PRODUCTION OF CONCENTRATE OF VALUABLE METALS Russian patent published in 2010 - IPC C22B60/02 C22B11/00 C22B3/08 

FIELD: metallurgy.

SUBSTANCE: procedure consists in sulphuric acid leaching of uranium. Also source material of 0.1-0.3 mm dimension is subjected to sulphuric acid leaching in autoclave till over 95% of uranium is transited to solution and till degree of pyrite oxidation reaches not less, than 50%. Upon separation of uranium containing solution from a solid phase in form of a cake the latter is conditioned by flotation of valuable metals with sulphydric collector and oxy-ethylated compound at pH 2.5-7.0 thus producing concentrate of valuable metals.

EFFECT: high degree of decomposition of persistent minerals of uranium and pyrite oxidation associating silver and gold and efficient extraction of uranium into water phase and valuable metals into floated concentrate.

17 cl, 1 dwg, 7 tbl, 5 ex