About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alumina & Bauxite
|
| Presentation Title |
Modelling, analysis and optimization of FCB Flash calciner |
| Author(s) |
Bharathesh Kumar, Chandrakala Kari, Parth Kamani, Neelmani Srivastava, Himanshu Ranjan, Keshav Karn, Ameet Chaure |
| On-Site Speaker (Planned) |
Chandrakala Kari |
| Abstract Scope |
The FCB flash calciner is a high-efficiency static calciner that uses a gas-solid cyclone combustor for alumina calcination. In this setup, preheated air and aluminium hydroxide feed enter co-currently from the top, enabling thermal interaction. This study focuses on optimizing particle distribution and heat transfer efficiency to reduce specific fuel consumption while maintaining alumina quality, particularly alpha-phase content and LOI. Unlike fluidized bed calciners with uniform temperatures, cyclonic systems pose challenges due to vortex-induced gradients, which may cause under-calcination. Owing to limited literature on such systems, Computational Fluid Dynamics (CFD) tool is used to model gas-solid interactions and combustion behavior. Simulations are validated against furnace temperature data. The optimized flow profile enhances particle residence time by over 50% and raises near-wall temperatures by approximately 10%. The results offer valuable insights into cyclonic combustor dynamics and provide a pathway for optimizing fuel efficiency while ensuring desired product quality. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Modeling and Simulation, Other |