Home Journals Articles Updates About
CN
image
收藏切换
Synergistic Extraction of Heavy Rare Earths Using Acidic Phosphine Mixed System
收藏切换
Luyan CHEN1, 2, Jie ZHOU1, 2, Bicheng DENG1, 2, Wangqiang KUANG1, 2, Jieying ZHOU1, 2, Yabin HUANG1, 2, Shengting KUANG1, 2, Wuping LIAO1, 2, 3
Hydrometallurgy of China | 2025, 44(6) : 707 - 716
Less
收藏切换
Hydrometallurgy of China | 2025, 44(6): 707-716
• Experiment Research •
Synergistic Extraction of Heavy Rare Earths Using Acidic Phosphine Mixed System
Full
Luyan CHEN1, 2, Jie ZHOU1, 2, Bicheng DENG1, 2, Wangqiang KUANG1, 2, Jieying ZHOU1, 2, Yabin HUANG1, 2, Shengting KUANG1, 2, Wuping LIAO1, 2, 3
Affiliations
  • 1.Institute of Material and Chemistry, Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou　341119, China
  • 2.Institute of Rare Earths Material and Chemistry, Jiangxi Institute of Rare Earths, Chinese Academy of Sciences, Ganzhou　341119, China
  • 3.State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun　130022, China
Published: 2025-12-20 doi: 10.13355/j.cnki.sfyj.2025.06.001
Outline
收藏切换

The extraction and separation of heavy rare earths (HREs) by a mixed extraction system composed of N, N′-di(2-ethylhexyl)aminomethyl phosphonic acid mono-2-ethylhexyl ester (HEDEAP, H2A2), 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester (P507, H2B2) and n-heptane were investigated. The results show that the HEDEAP-P507 mixed system exhibits positive synergistic effects on HREs extraction. Under optimal conditions (HEDEAP molar fraction of 0.4, pH 2.0, phase ratio(Vo∶Va) of 1∶1 and temperature of 25 ℃), the maximum synergistic coefficient for Lu(Ⅲ) extraction can reach 1.42. The separation factors for Y/Ho, Er/Y, Tm/Er, Yb/Tm and Lu/Yb are determined as 1.67, 1.76, 4.5, 1.67 and 2.11, respectively, surpassing those of the single P507 system. FT-IR analysis result reveals the participation of P—OH and P═O groups in coordination reactions. Slope analysis indicates the possible formation of REH3A2B2Cl2 as the synergistic complexes. The loading capacity of the mixed system containing 12 % HEDEAP and 18 % P507 for Lu(Ⅲ) is measured to be 32.4 g/L (calculated as Lu2O3). The HREs loaded in the mixed system is easy to be stripping. The Lu(Ⅲ) stripping rate is 80% with 1.0 mol/L HCl, and the stripping acidity required for the same stripping rate is much lower than of P507 system (4.0 mol/L). Compared to the sole P507 system, the HEDEAP-P507 mixed system significantly enhances extraction selectivity for HREs while reducing stripping acidity requirements, demonstrating substantial scientific significance and promising application potential for selective separation of HREs.

heavy rare earths  /  separation  /  synergistic extraction  /  aminophosphonic acid  /  P507
陈露燕, 周杰, 邓必成, 况王强, 周洁英, 黄亚斌, 邝圣庭, 廖伍平. 酸性膦混合体系协同萃取重稀土性能研究. 湿法冶金, 2025 , 44 (6) : 707 -716 . DOI: 10.13355/j.cnki.sfyj.2025.06.001
Luyan CHEN, Jie ZHOU, Bicheng DENG, Wangqiang KUANG, Jieying ZHOU, Yabin HUANG, Shengting KUANG, Wuping LIAO. Synergistic Extraction of Heavy Rare Earths Using Acidic Phosphine Mixed System[J]. Hydrometallurgy of China, 2025 , 44 (6) : 707 -716 . DOI: 10.13355/j.cnki.sfyj.2025.06.001
Appendix
Less
Year 2025 volume 44 Issue 6
139
26
Cite this Article
BibTeX
Article Info
doi: 10.13355/j.cnki.sfyj.2025.06.001
  • Receive Date：2025-05-09
  • Online Date：2026-09-28
  • Published：2025-12-20
Article Data
Affiliations
History
  • Received：2025-05-09
Funding
Affiliations
    1.Institute of Material and Chemistry, Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou　341119, China
    2.Institute of Rare Earths Material and Chemistry, Jiangxi Institute of Rare Earths, Chinese Academy of Sciences, Ganzhou　341119, China
    3.State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun　130022, China
References
Share
https://castjournals.cast.org.cn/joweb/sfyj/EN/10.13355/j.cnki.sfyj.2025.06.001
Share to
QR

Scan QR to access full text

Cite this article
BibTeX
Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
关闭全屏
  • BibTeX
  • EndNote
  • RefWorks
  • TxT
Links
Articles
Latest Articles
Most Read
Collections
Updates
Events
News
Multimedia
About
About Us
Contact
No. 86 Xueyuan South Road, Haidian District, Beijing
100081
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn

Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House