About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alumina & Bauxite
|
| Presentation Title |
Toward Sustainable Utilization of Bauxite Residue: Large-Scale Laboratory Investigation |
| Author(s) |
Himanshu Tanvar, Brajendra Mishra |
| On-Site Speaker (Planned) |
Himanshu Tanvar |
| Abstract Scope |
The Bayer process, commercialized in the late 1800s, remains the predominant method for alumina production, accounting for over 95% of global output. For each ton of alumina produced, approximately 1 to 1.5 tons of bauxite residue is generated, leading to a global stockpile estimated at 3 to 4 billion tons stored in containment dams. The current recycling rate of bauxite residue is less than 5%, with major applications in the cement industry. This work presents a hydrometallurgical process for recovering high purity magnetite and alumina from bauxite residue. Large-scale laboratory trials (20L) were conducted to extract high-purity magnetite, alumina, silica and calcium carbonate. Additionally, the potential for recovery of rare earth elements (scandium) within the process flowsheet was also evaluated. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Hydrometallurgy, Sustainability, Extraction and Processing |