METHOD OF EXTRACTING URANIUM Russian patent published in 2016 - IPC C22B60/02 C22B3/08 

FIELD: metallurgy.

SUBSTANCE: invention relates to hydrometallurgy of uranium. Method of extracting uranium from uranium-containing ores includes leaching ore with a sulphuric leaching solution with an oxidant containing persulphuric acid. Oxidant used is obtained by electrolysis of a solution containing not less than 500 g/l H₂SO_4, sulphate solution of persulphuric acid H₂S₂O₈, containing H₂S₂O₈ in amount of 140÷300 g/l and H₂SO₄ in amount of 390÷200 g/l. Leaching is carried out with sulphuric leaching solution with concentration of persulphuric acid of not less than 0.5 g/l, preferably 0.5-1 g/l.

EFFECT: obtaining oxidant directly in sections of underground or heap leaching, which enables to avoid imported oxidants during extraction of uranium from uranium-containing ore.

1 cl, 1 ex