Effect of Organic Extractants on the Extraction of Rare Earth Elements from Sulphuric Acid Leach Liquor

DOI

10.2991/ahcps.k.211004.020How to use a DOI?

Keywords

Apatite, Rare earth elements, Leach liquor, Extractant, Solvent extraction

Abstract

In this study, the various organic extractants, namely D2EHPA, PC-88A, TBP, TBPP, TOA, and TOPO, were examined to extract REEs from sulphuric acid leach liquor of apatite ore. Extraction parameters including extractants type, the concentration of extractant, organic to aqueous phase ratio, and contact time were investigated. Stripping experiments were conducted using different concentrations (0.5-4 M) of hydrochloric acid. Results showed that the overall extraction of REEs into the PC-88 extractant were ranged between 20 and 35%, while their extraction with other extractants did not exceed 20%. Interestingly, heavy rare earth elements (Tb, Dy, Er, and Y) were selectively extracted with D2EHPA when the light REEs extraction was lower than 5%.

Copyright

© 2021, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Altansukh Batnasan
AU  - Ariunbolor Narankhuu
AU  - Ariuntuya Battsengel
AU  - Kazutoshi Haga
AU  - Atsushi Shibayama
PY  - 2021
DA  - 2021/10/05
TI  - Effect of Organic Extractants on the Extraction of Rare Earth Elements from Sulphuric Acid Leach Liquor
BT  - Proceedings of the 5th International Conference on Chemical Investigation and Utilization of Natural Resource (ICCIUNR-2021)
PB  - Atlantis Press
SP  - 142
EP  - 148
SN  - 2590-3195
UR  - https://doi.org/10.2991/ahcps.k.211004.020
DO  - 10.2991/ahcps.k.211004.020
ID  - Batnasan2021
ER  -