| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2021
|
| Presentation Title |
Efficient Low-cost Gravity-driven Multiple Effect Thermal System (G-METS) Distillation of Magnesium |
| Author(s) |
Armaghan Ehsani Telgerafchi, Gabriel Espinosa, Madison A. Rutherford, Adam C. Powell, David Dussault |
| On-Site Speaker (Planned) |
Armaghan Ehsani Telgerafchi |
| Abstract Scope |
Vapor compression distillation (VCD) can reduce the energy use and cost of magnesium distillation refining by up to 90% vs. today's batch distillation processes. This work describes a new continuous gravity-driven multiple effect thermal system (G-METS) process for magnesium VCD with just one internal moving part. The distiller will likely use less than 1 kWh/kg magnesium product, and high throughput of the continuous process can lower capital cost considerably. A detailed thermal model of the system presented here describes multicomponent evaporation, and batch distiller experiments validate key components of the model. There are multiple alloy distillation challenges with potential solutions described here, including liquid diffusion resistance, aerosol carry-over, and removal of volatile elements such as zinc. This efficient low-cost process could play a key role in multiple new flow sheets, from magnesium alloy recycling to rare earth magnet recycling to primary magnesium production. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnesium, Recycling and Secondary Recovery, Modeling and Simulation |