Preliminary Study on Separation of Dy and Nd by Multi-Step Extraction Using TDdDGA

IF 0.6 4区工程技术 Q4 CHEMISTRY, MULTIDISCIPLINARY

Solvent Extraction Research and Development, Japan Pub Date : 2020-01-01 DOI:10.15261/serdj.27.63

Y. Sasaki, Y. Ban, Keisuke Morita, M. Matsumiya, Ryoma Ono, H. Shiroishi

引用次数: 5

Abstract

Mutual separation technique of Dy and Nd in Nd magnets is studied. Dy is more valuable than Nd, and therefore, Dy should be isolated and reused. Lanthanide elements can be extracted thoroughly by using diglycolamide (DGA) extractants, and we use this reagent to recover and isolate Dy. N,N,N’,N’ -Tetradodecyl-DGA (TDdDGA) has a relatively high separation factor (SF) between Dy and Nd (SF: over 10) in the HNO 3 extraction system, so multi-step extraction using TDdDGA is applied to mutually separate them. In the present study, by using the condition, four extraction steps, organic phase: 0.1 M TDdDGA in n -dodecane, aqueous phase: 0.3 M HNO 3 , 92 % Dy can be recovered with 0.7 % co-extraction of Nd.

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TDdDGA多步萃取分离Dy和Nd的初步研究

研究了钕磁体中镝和钕的相互分离技术。Dy比Nd更有价值，因此，Dy应该被分离和重用。二甘醇酰胺(DGA)萃取剂可以彻底地提取镧系元素，我们使用该试剂回收分离了Dy,N,N '，N ' -十四烷基DGA (TDdDGA)在hno3萃取体系中Dy和Nd的分离因子(SF)较高(SF: > 10)，因此采用TDdDGA多步萃取将两者相互分离。本研究采用四步萃取条件，即有机相:0.1 M TDdDGA在正十二烷中，水相:0.3 M hno3，共萃取0.7% Nd，可回收92%的Dy。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Solvent Extraction Research and Development, Japan 工程技术-工程：化工

CiteScore

1.30

自引率

14.30%

发文量

审稿时长

1 months

期刊介绍： Solvent Extraction Research and Development, Japan (Solvent Extr. Res. Dev., Jpn.) is a periodical issued from Japan Association of Solvent Extraction (JASE) containing papers dealing with all aspects of solvent extraction and their related methods, underlying principles, and materials. Original articles, notes, technical reports, and critical reviews will be considered for publication. Original articles must be of reasonably broad scope and significance to the solvent extraction. Notes will originally describe novel work of a limited nature or especially significant work in progress. Authors can contribute some information of novel techniques, equipment or apparatus, reagents and diluents for solvent extraction as technical reports. Critical reviews will be received from the authors to whom the editorial committee asked to contribute.