About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alumina & Bauxite
|
| Presentation Title |
A Novel Route to Phase-Controlled High-Purity Alumina from Anorthosite via Single-Step Calcination |
| Author(s) |
Saima Sultana Kazi, Fernando Sitorus, Jean Patrick Pinheiro, Duygu Yilmaz |
| On-Site Speaker (Planned) |
Duygu Yilmaz |
| Abstract Scope |
This study introduces an innovative process for producing high-purity alumina (HPA) from aluminium chloride hexahydrate (ACH), offering a simplified alternative to conventional two-step calcination. By integrating a controlled neutralization step with closed-loop acid recovery, the process allows a single-step thermal treatment while reducing the release of hydrochloric acid during calcination. This significantly lowers the risk of equipment corrosion, eliminating the need for complex and costly corrosion-resistant kilns typically required in conventional ACH-based HPA production. Additionally, the approach enables improved control over phase evolution during calcination and contributes to circular chemical use through acid regeneration. The proposed method offers a cleaner, more efficient, and infrastructure-friendly route to HPA production, suitable for applications requiring high purity and thermal processing reliability. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Ceramics, Hydrometallurgy, Sustainability |