Dissolution of the Rare‐Earth Mineral Bastnaesite by Acidic Amide Ionic Liquid for Recovery of Critical Materials
作者:John W. Freiderich、Joseph J. Stankovich、Huimin Luo、Sheng Dai、Bruce A. Moyer
DOI:10.1002/ejic.201500509
日期:2015.9
As such, the recovery of rare earths (REs) from minerals such as bastnaesite remains important for modern times. As the light lanthanides (La–Nd) constitute the majority (typically >98.7 %) of the REs in bastnaesite with the heavy REs (Sm–Lu) contributing the remainder (approximately 1.3 %), an enrichment of heavier REs may serve as an effective means of assisting rare-earth recovery. Such an extractive
稀土元素是清洁可持续能源和计算机、通信和交通等现代技术的基石。因此,从氟碳铈矿等矿物中回收稀土 (RE) 对现代仍然很重要。由于轻镧系元素 (La–Nd) 构成氟碳铈矿中稀土元素的大部分(通常 >98.7%),而重稀土元素(Sm–Lu)贡献其余部分(约 1.3%),因此重稀土元素的富集可作为协助稀土回收的有效手段。这种涉及离子液体 (IL) 的提取冶金过程导致重稀土的富集接近一个数量级。酸性IL N,IL 1-丁基-3-甲基咪唑鎓双(三氟甲基磺酰基)酰亚胺(BMIM+NTf2-)中的 N-二甲基乙脒双(三氟甲基磺酰基)酰亚胺(DMAH+NTf2-)溶解泡沫浮选氟碳铈矿、合成氟碳铈矿类似物(RECO3F)和 RE2O3, RE2(CO3)3 矿物。针对该 IL 系统提出了氟碳铈矿溶解的整体反应。该 IL 系统可以为氟碳铈矿泡沫浮选精矿提供更大的稀土分离方案的初始阶段。