| About this Abstract |
| Meeting |
2010 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alumina and Bauxite
|
| Presentation Title |
Improvement of Product Quality in Circulating Fluidized Bed Calcination |
| Author(s) |
Cornelis Klett, Michael Missalla, Roger Bligh |
| On-Site Speaker (Planned) |
Cornelis Klett |
| Abstract Scope |
Until the introduction of Circulating Fluidized Bed (CFB) Calciners by Outotec (formerly Lurgi) in 1961 rotary kilns were the standard technology for the calcination of alumina. Since then, stationary calciners such as CFBs are the preferred technologies for new installations due to their superior energy efficiency despite their higher generation in fines.
Over the last years Outotec researched ways to minimize particle breakage in its CFB calciners. Particle breakage is strongly dependent on the properties of the hydrate such as the hydrate shrinking behavior. Nevertheless other major influences like mechanical stress are a direct function of the calcining technology.
Recent installed calciners and measurements from these have shown that Outotec has made a significant leap forward to reduce the particle breakage close to the level of rotary kilns whilst maintaining their enhanced operating performance and energy efficiency. The results of the recent achievements will be presented in this paper. |
| Proceedings Inclusion? |
Definite: A combination print-CD volume |