Abstract

An efficient and simple process was developed to extract valuable metals from monazite ore. Monazite was subjected to acidic digestion. Then isopropyl alcohol as a miscible solvent was added in different ratios. The produced REEs were purified with Dowex 50 cation-exchange resin. 4 M HCl was used for the complete REEs elution. Thorium was separated by precipitation with 20% oxalic acid. Uranium was separated using Dowex 1 anion-exchange resin, eluted with acidified sodium chloride (1 M NaCl + 0.15 M H₂SO₄), and precipitated at pH 7.5.

中文翻译：

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使用混溶醇和离子交换技术从埃及独居石中分离经济和有价值的元素

摘要

开发了一种高效且简单的工艺来从独居石矿石中提取有价值的金属。对独居石进行酸性消化。然后以不同比例加入作为混溶溶剂的异丙醇。生成的 REE 用 Dowex 50 阳离子交换树脂纯化。4 M HCl 用于完全洗脱 REE。通过用 20% 草酸沉淀分离钍。使用 Dowex 1 阴离子交换树脂分离铀，用酸化氯化钠（1 M NaCl + 0.15 MH ₂ SO ₄）洗脱，并在 pH 7.5 下沉淀。