Journal
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
Volume 21, Issue -, Pages 436-442Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2014.03.002
Keywords
Pr; Nd; Solvent extraction; Scrubbing; Recovery
Funding
- fundamental R&D Program for Core Technology of Materials - Ministry of Knowledge Economy, Republic of Korea
- National Research Council of Science & Technology (NST), Republic of Korea [15-1219] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Solvent extraction of Pr and Nd from chloride solution was carried out using PC 88A for the recovery of magnetic grade Nd. The presence of complexing reagents (H2O2 and citric acid) affected little the selective extraction of Nd over Pr. The observed maximum separation factor between Pr and Nd was 1.5, indicating that the separation of Nd and Pr by selective extraction was difficult. Co-extraction of two metals with PC 88A followed by selective scrubbing was tried. Batch simulation of counter-current showed that the complete recovery of Nd was possible and a process flow sheet has been presented. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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