Arafura Resources is an Australian based mineral exploration and development company currently developing the Nolans Rare Earths-Uranium project. Raw Phosphoric Acid (PA @ 18% P_2O_5) to be obtained by Solvent Extraction (SX) from the leach solution of Nolans ore is expected to contain -100 mg/L U and ~8 g/L Fe. It was clear that the acid has to be purified before being concentrated to a salable product. While most extractants remove either Fe alone (removal of Fe from the PA is well known in the phosphoric acid industry and is usually done by Alamine 336 or similar, in a process named "amine wash"), or both U and Fe, the challenge was to remove both metals, with Uranium to be recovered separately as a valuable product. This paper describes the work carried out in an effort to find a solvent that could extract both U and Fe and from which, they can be recovered in two separate, distinctive steps.
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机译：Arafura资源是一家澳大利亚矿产勘探开发公司，目前正在开发Nolans稀土 - 铀项目。通过溶剂萃取（SX）获得的原料磷酸（PA @ 18％P_2O_5）从诺斯矿石的浸出溶液获得，含有-100mg / L u和〜8g / L Fe。显然，必须在浓缩成可销售产品之前纯化酸。虽然大多数萃取剂单独除去Fe（从PA中除去Fe在磷酸工业中是众所周知的，并且通常由Alamine 336或类似的，在名为“胺洗涤”）的过程中，或者U和FE，挑战是去除两个金属，用铀作为有价值的产品分开回收。本文介绍了在努力中进行的工作，以找到可以提取U和Fe的溶剂以及它们，它们可以在两个独特的，独特的步骤中恢复。
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