About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Reduction Technology
|
| Presentation Title |
Sensitivity of metal transport to particle size in aluminum smelter fugitive emissions |
| Author(s) |
Preston Buscay, Gabriella Tranell, Kristian Etienne Einarsrud |
| On-Site Speaker (Planned) |
Preston Buscay |
| Abstract Scope |
Heavy metal-bearing fugitive emissions from aluminum production are heterogeneous, spanning ultrafine bath particles to coarse alumina and anode dust, each possessing a distinct fingerprint of heavy metal content. Their unique size-dependent dispersion and deposition characteristics can be modeled and correlated against measured metal concentrations, inferring the particulate types involved in their transport. A sensitivity analysis was conducted using CALPUFF, simulating monodisperse particles from 0.5 to 300 microns and comparing the modeled concentrations with measurements of heavy metals at a receptor 700 m downwind of the potlines at Hydro Sunndal, Norway.
Aluminum correlated most strongly with fine particles (0.5–5 microns), with decreasing correlation at larger particulate sizes. For most other metals, correlations were moderate for the smallest particles, decreased at intermediate sizes, and then increased, reaching their highest values for coarse particles above 70 microns. These results suggest that certain metals are associated with specific effective particle size ranges in transport. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Environmental Effects, Modeling and Simulation, Other |