Spiking of the rare earth demand and price globally has put tremendous pressure to look for a new alternative in extractant that could provide better separation and higher output, yet with minimal cost. This work aimed to perform the techno-economic assessment on the new extractant against the conventional extractants; DEHPA and 2-ethylhexyl phosphoric acid-2-ethylhexyl ester (EHEHPA) in pursuance of evaluating the feasibility of these extractants on an industrial scale. This work focused on a recent extractant type, which incorporates two common extractants and produces a bifunctional ionic liquid called [A336][DEHPA]. It is a mixture of Aliquat 336 (A336) and di-(2-ethylhexyl)phosphoric acid (DEHPA) through acid/base neutralization. Previously, [A336][DEHPA] has shown good extraction capabilities with low extraction stages in the separation of samarium, europium, and gadolinium. EHEHPA has been selected as the baseline using the information from the literature. The assessment is divided into two scenarios; 1) the separation of samarium from the middle rare earth concentrate and 2) the separation of europium and gadolinium. The analysis outcome reveals that for both scenarios, DEHPA manages to provide 99.9% purity and 90% recovery of rare earth with lower investment compared to the EHEHPA. Although the [A336][DEHPA] could provide an environmental-friendly option, the enormous expenses make the process infeasible.

全球稀土需求和价格的飙升给寻找萃取剂的新替代品带来了巨大压力，该替代品可以提供更好的分离效果和更高的产量，同时成本最低。这项工作旨在对新萃取剂与传统萃取剂进行技术经济评估；DEHPA和2-乙基己基磷酸-2-乙基己酯（EHEHPA）旨在评估这些萃取剂在工业规模上的可行性。这项工作集中于一种新型的萃取剂，该萃取剂结合了两种常见的萃取剂，并产生一种称为[A336] [DEHPA]的双功能离子液体。它是通过酸/碱中和法制得的Aliquat 336（A336）和二-（2-乙基己基）磷酸（DEHPA）的混合物。之前，[A336] [DEHPA]在the 、,和g的分离中显示出良好的萃取能力，萃取步骤低。根据文献资料，EHEHPA已被选作基线。评估分为两种情况：1）从中等稀土精矿中分离of，以及2）and和separation分离。分析结果表明，与EHEHPA相比，DEHPA设法以较低的投资提供了99.9％的纯度和90％的稀土回收率。尽管[A336] [DEHPA]可以提供环保的选择，但巨大的费用使该过程不可行。1）从中等稀土精矿中分离of，以及2）and和separation分离。分析结果表明，与EHEHPA相比，DEHPA设法以较低的投资提供了99.9％的纯度和90％的稀土回收率。尽管[A336] [DEHPA]可以提供环保的选择，但巨大的费用使该过程不可行。1）从中等稀土精矿中分离of，以及2）and和separation分离。分析结果表明，与EHEHPA相比，DEHPA设法以较低的投资提供了99.9％的纯度和90％的稀土回收率。尽管[A336] [DEHPA]可以提供环保的选择，但巨大的费用使该过程不可行。