| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
2023 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-2: Extraction of Niobium and Tantalum Oxides from Columbite Concentrate |
| Author(s) |
Himanshu Tanvar, Brajendra Mishra |
| On-Site Speaker (Planned) |
Himanshu Tanvar |
| Abstract Scope |
The industrial processes for extraction of niobium and tantalum oxides are highly dependent on hydrofluoric acid. This work focuses on developing an alternative fluoride-free approach based on alkali treatment and solvent extraction. The application of microwaves in thermal treatment with potassium hydroxide shows positive outcomes of rapid processing with a high reaction rate and recovery. The microwave alkali treatment produces a water-soluble complex of niobium and tantalum separated in a downstream solvent extraction circuit using methyltrioctylammonium chloride as an extractant. Finally, niobium oxide and tantalum-rich mixed oxide with >98% purity were prepared after precipitation of purified solution. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Extraction and Processing, Hydrometallurgy, Sustainability |