Abstract

The study deals with separation of uranium, thorium, and yttrium with highest possible purity from El-Garaa El-Hamara sulfate leach liquor. From the latter, almost complete extraction of uranium (99%) was achieved using Alamine 336 in kerosene at pH 0.8; it was followed by selective precipitation of thorium as thorium peroxide at pH 1.9 using 30% H₂O₂. Primene JM-T in kerosene separates selectively pure yttrium from the prepared RE cake at pH 1.5. A flowsheet for the preparation of pure oxides of U, Th, and Y was proposed.

中文翻译：

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用El-Garra El-Hamra硫酸盐浸出液制备纯铀，Thor和氧化钇

摘要

该研究涉及从El-Garaa El-Hamara硫酸盐浸出液中分离出最高纯度的铀，th和钇。从后者中，使用Alamine 336在pH值为0.8的煤油中几乎可以完全萃取铀（99％）。然后用30％H ₂ O ₂在pH 1.9选择性沉淀出as，即过氧化th 。煤油中的Primene JM-T在pH 1.5下从制备的RE饼中选择性分离纯钇。提出了制备U，Th和Y的纯氧化物的流程图。