About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fundamentals of Sustainable Metallurgy and Processing of Materials
|
| Presentation Title |
Beneficiation of iron ore slime by low temperature treatment for removal of alumina and silica |
| Author(s) |
Gutti Chinna Chandrudu, Gautam Behara, Prasanta Jana, Mehmet Ali Recai Onal, Chenna Rao Borra |
| On-Site Speaker (Planned) |
Gutti Chinna Chandrudu |
| Abstract Scope |
Iron ore slime, a byproduct from iron ore beneficiation, is often discarded due to its fine particle size and high gangue content. These slimes contain complex mineral phases, making them difficult to process using traditional methods. This study explores a novel low-temperature alkali treatment (100–150 °C) to selectively remove Al₂O₃ and SiO₂. In this approach, NaOH reacts with gangue minerals to form soluble compounds like NaAlO₂ and Na₂SiO₃, which are removed through water leaching. Analytical techniques such as XRF, XRD, and SEM-EDS were used to evaluate the process. Results showed that up to 80% of Al₂O₃ and 50% of SiO₂ were removed, increasing iron content from 50.5% to around 59%. This patented method offers a scalable, cost-effective, and environmentally friendly solution for upgrading low-grade iron ore slimes, supporting cleaner production practices in the iron and steel industry. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Hydrometallurgy, Extraction and Processing |