FIELD: metallurgy.
SUBSTANCE: method includes graining of uranium ore, its sulphatisation by sulfur acid at presence of nitric acid. Additionally nitric acid is fed in amount required for oxidation of sulphides containing in uranium ore. Then received grains are subject to thermal treatment at temperature 200-300°C and leaching by water.
EFFECT: reduction of consumption of mineral acids for reprocessing of uranium ore and in increasing of uranium extraction.
5 ex
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