多组分硫酸体系P_(507)萃取分离铈(Ⅳ)工艺

Process for Separating Cerium() from the Sulfate System Containing Several Components through Extracting with 2Ethyl Hexyl 2Ethyl Hexyl Phosphonic Acid on IndustrialScale

本文对２－乙基己基膦酸单２－乙基己基酯（Ｐ５０７）从含有Ｃａ２＋、Ｆｅ３＋、Ｆ－、ＰＯ３－４、Ｔｈ４＋、Ａｌ３＋、Ｍｎ２＋的多组分硫酸稀土溶液中一步萃取分离铈（Ⅳ）工艺进行研究，得到纯度≥９９．９％的氧化铈产品及少铈碳酸稀土产品（ＣｅＯ２／ＲＥＯ≤３％）。

The process for separating cerium() from the rare earth solution consisting of Ca2+Fe3+F-PO3-4Th4+Mn4+Al3+ through extracting with 2-ethyl hexyl 2-ethyl hexyl phosphonic acid in one step was investigated on industrialscale.Cerium oxide (CeO2/REO9990%) and ceriumless rare earth carbonate (CeO2/REO3%) was obtained simultaneously.