| 摘要 |
FIELD: processing of uranium ore raw material. SUBSTANCE: uranium is extracted at crushing and grinding or ore and leaching and sorption of it from pulp followed by desorption and extraction from strippants. Re- extraction is performed at separation of crystals of ammonium uranyl tricarbonate which are subjected to treatment with carbonate ammonium or carbonate-bicarbonate solution followed by filtration, dissolving in water at temperature 70-90 C at volume-to-weight ratio of liquid and solid phases of 6 to 10:1, filtration and settling of secondary crystals ammonium uranyl tricarbonate by carbon ammonium salts at temperature of 20-40 C and their calcination to state uranous-uranic oxide. EFFECT: improved quality of uranous-uranic oxide. 2 cl, 2 tbl |
