| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Rare Metal Extraction & Processing
|
| Presentation Title |
Selective Recovery of Scandium from Nickel Laterite Ore by Acid Roasting - Water Leaching |
| Author(s) |
John Anawati, Runlin Yuan, Jihye Kim, Gisele Azimi |
| On-Site Speaker (Planned) |
John Anawati |
| Abstract Scope |
Scandium is a rare and expensive metal that is in increasing demand because of its unique properties. Laterite ore is known to contain scandium in appreciable amounts. In this study, a two-stage process called acid roasting water leaching was developed to extract scandium from laterite ore with minimal co-extraction of iron. In this process, the ore was mixed with concentrated sulfuric acid (98 wt%) and roasted in a furnace at above 700 °C. The roasted ore was then leached in water at ambient conditions. During acid roasting, Fe2(SO4)3 decomposed to Fe2O3, which is insoluble in water; thus, it can be separated during the leaching process. A fractional factorial design methodology was utilized to investigate the effect of various operating parameters during the roasting and leaching processes and to optimize the processes. After optimization, 94 % of scandium was recovered with less than 14 % co-extraction of iron. |
| Proceedings Inclusion? |
Planned: |