About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Rare Metal Extraction & Processing
|
| Presentation Title |
Hydrometallurgical extraction of rare earths from nitric acid leached solution of apatite using mixed organophosphorus extractant |
| Author(s) |
Rajiv Srivastava, Sadia Ilyas |
| On-Site Speaker (Planned) |
Rajiv Srivastava |
| Abstract Scope |
Apatite is an important host mineral for rare earth metals (REMs); however, it has received comparatively less attention than other REM-bearing minerals such as monazite, bastnasite and xenotime. Herein, we present laboratory-scale results on REMs’ recovery from an apatite ore leached solution in nitric acid via solvent extraction using an organophosphorus extractant mixture. Key process parameters like the concentrations of H+ and NO3– ions in the aqueous phase and the extractant concentration in the organic phase were optimized to achieve maximum extraction of REMs. The results showed that increasing NO3– ions in the aqueous phase and extractant concentration in the organic phase enhanced REMs’ distribution into the organic phase. Conversely, higher proton concentration suppressed the extraction efficiency. Additionally, the composition ratio of the organophosphorus extractant mixture exhibited a notable influence on REMs’ extraction. The findings of this study will support the scale-up of the process for recovering high-purity REMs’ salt. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Hydrometallurgy, Process Technology, |