| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Minerals, Metals and Materials 2024: Process-Structure-Property Relations and New Technologies
|
| Presentation Title |
Characterization, Thermodynamic Evaluation and Phase Evolution of Soda-ash Assisted Roast Treatment of Alluvial Columbite Mineral Deposit for Efficient Recovery of Niobium and Tantalum |
| Author(s) |
Nnaemeka Stanislaus Nzeh, Patricia Abimbola Popoola, Abraham Adeleke, Samson Adeosun, Emenike George Okonkwo |
| On-Site Speaker (Planned) |
Nnaemeka Stanislaus Nzeh |
| Abstract Scope |
This study explored the thermodynamics feasibility of soda ash-assisted-roasting of silica-based-alluvial columbite-mineral (SBACM) from Rayfield-Jos minefields, Jos-South, in Plateau state, Nigeria. Alkaline roasting of the columbite-bearing deposit was characterized/evaluated aiming towards the thermodynamic reactions and phase evolutions during Nb/Ta extraction. Hence, isothermal roasting experiments were conducted to investigate the effects of certain parameters such as the roasting temperature and alkali-to-sample mass ratio on the measure/level of the recovery of Nb/Ta. In this study, roasting efficiencies were realized to be affected by the aforementioned parameters with certain optimum values for each of the parameter. The results realized indicate the feasibility of taking Nb/Ta into solution without using the toxic/hazardous HF acid and also delivering a pregnant liquor stream that is suitable for subsequent downstream hydrometallurgical treatment. Thus, this will provide comprehensive understanding of the effects of temperature and alkali mass ratio on the thermodynamics, formation of water-soluble compounds and recovery efficiencies. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Pyrometallurgy, Extraction and Processing |