METHOD OF PROCESSING URANIUM ORES Russian patent published in 2003 - IPC

FIELD: extraction of ore raw materials. SUBSTANCE: uranium ore is subjected to crushing and wet grinding to obtain pulp which is later subjected to thickening, acid agitation leaching, sorption of uranium from pulp, desorption of uranium from ionite saturated from pulp and desiliconization of ionite. Then, acid percolation leaching of ore is performed which is followed by sorption of uranium from solutions, desorption of uranium from ionite saturated from pulp and solutions, re-extraction of uranium at separation of crystals ammonium uranyl tricarbonate and calcinating resulting in obtaining uranous-uranic oxide; waste ion-exchange material at size of 0.6 to 0.2 mm ≥95%, is subjected to desiliconization and is later used for sorption of uranium from percolation leaching solutions for ion- exchange treatment of circulating and waste water. Proposed method ensures reduction of consumption of ionite and content of admixtures in circulating and waste water. EFFECT: enhanced efficiency; additional yields of certified commercial products. 2 dwg, 3 tbl, 3 ex