RECOVER METHOD OF URANIUM FROM HARD ORES

摘要

FIELD: metallurgy. ^ SUBSTANCE: method includes oxidising roasting at temperature 500-700C and sulfuric acid leaching of uranium. For roasting it is subject crushed up to fineness - 2 or 5 mm ore, containing sulfur and carbonates. Received in the issue of roasting cinder is grinned, it is prepared from it pulp and it is used in scrubber for neutralisation of contained in effluent gas of roasting of sulfur dioxide. Neutralised pulp is taken out from scrubber and is directed to sulfuric acid leaching of uranium. Collected from effluent gas of roasting dust is granulated and granules are directed to roasting jointly with ore. ^ EFFECT: improvement of ecological situation at treatment of uranium ores, increasing of extraction ratio of uranium from ore ensured by efficient use of collected dust. ^ 2 cl, 2 tbl, 1 ex