| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alumina and Bauxite
|
| Presentation Title |
Mineralogical Assessment of the Solid Phase Obtained on Leaching of Brazilian Red Mud |
| Author(s) |
Amilton Barbosa Botelho Junior, Denise Espinosa, Jorge Tenório |
| On-Site Speaker (Planned) |
Amilton Barbosa Botelho Junior |
| Abstract Scope |
The main residue generated during the Bayer Process is the red mud. In 2015, the quantity of waste stored around the world reached 4 billion ton. The composition of the red mud varies according to the bauxite used in the alumina extraction process. The main components of the residue are iron, aluminum, silicon and titanium. Despite that, the red mud is the main source of scandium, considered as a critical metal. Hydrometallurgical processing is the main route used for scandium extraction from red mud. For this reason, the goal of this work is the mineral assessment of the solid phase obtained on leaching of red mud. The Brazilian sample was leached by sulfuric acid. The solid/liquid ratio was 1/10 and the acid concentration was studied. Results showed that the mineral phases obtained was in agreement with the thermodynamic simulation calculated using FactSage software. Experiments were carried out at 25°C. |
| Proceedings Inclusion? |
Planned: Light Metals |