| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2025
|
| Presentation Title |
Efficient Recycling of Magnesium alloys via Partial Distillation using Gravity-Multiple Effect Thermal System (G-METS) |
| Author(s) |
Daniel Mc Arthur Sehar, Kenichi Saito, Armaghan Telgerafchi, Maya Gallego, Meera Sridhar, Artem Iurkovskyi, Adam Powell |
| On-Site Speaker (Planned) |
Daniel Mc Arthur Sehar |
| Abstract Scope |
Magnesium’s remarkable stiffness-to-weight and high strength-to-weight ratios could potentially enable substantial vehicle lightweighting vs. aluminum and steel. However, primary production is very energy- and emissions-intensive, and recycling cannot cost-effectively produce magnesium of sufficient purity for die casting and other structural applications. Distillation can produce high-purity magnesium but is capital- and energy-intensive. Gravity-Driven Multiple Effect Thermal System (G-METS) is a continuous low-pressure magnesium distillation process used in primary production or recycling in which heat re-use leads to just 0.5-1 kWh energy consumption per kg Mg product—which is 80-90% less energy than current Mg distillation. This paper presents new partial distillation experiments showing 99.96% product purity. An industrial distiller design can help to estimate capital costs. New modeling work describes temperature and pressure change in the vapor conduit, energy use and losses in the industrial distiller, and effects of evaporator flow vanes on the separation of volatile elements such as zinc. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnesium, Extraction and Processing, Recycling and Secondary Recovery |