About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fundamentals of Sustainable Metallurgy and Materials Science
|
| Presentation Title |
Liquid metal-mediated mechanochemistry for sustainable metal processing |
| Author(s) |
Kaitlyn M. Mullin, Shaolou Wei, Linfeng Li, Wade Shipley, Ferdi Schüth, Dierk Raabe |
| On-Site Speaker (Planned) |
Kaitlyn M. Mullin |
| Abstract Scope |
The large environmental footprint from metal production necessitates the development of sustainable strategies for metal synthesis and recycling. Although mechanochemical processing is a promising alternative to conventional pyrometallurgy, reduction of highly stable oxides is often hindered by sluggish kinetics. Here, we employ a low melting point metal to accelerate mechanochemically-driven metallothermic oxide reduction. Impact-induced melting promotes chemical mixing and continual rejuvenation of oxide-metal interfaces, leading to a dramatic acceleration in metal extraction and alloying without external heating. We exemplify this approach by using gallium to reduce hematite, and substantiate the relative contributions of mechanical impact, defect generation, and thermal activation to reduction mechanisms. These findings highlight the kinetic advantages afforded by mechanochemical processing, enabling energy-efficient pathways for metal extraction from oxides. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Extraction and Processing, Powder Materials, Sustainability |