About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Reactive Shroud Electrode for Improving Recovery of Stable Elements From Pyroprocessing Salts |
| Author(s) |
Timothy Lichtenstein, Levi Gardner, Melissa A. Rose |
| On-Site Speaker (Planned) |
Timothy Lichtenstein |
| Abstract Scope |
During pyroprocessing of used nuclear fuel, active metal chlorides (Sr, Cs) accumulate in the electrolyte and must be maintained below a certain concentration threshold to maintain the desired salt conditions. Both CsCl and SrCl<sub>2</sub> are more stable than the base LiCl-KCl salt, making removal difficult. Separation of Sr from molten salts has been demonstrated through electrochemical alloying with electronegative metals. However, CsCl is even more stable than SrCl<sub>2</sub> and is not easily separated by this method. Here, we couple two electronegative metals electrodes to improve active metal separation by nesting a liquid electronegative electrode within a solid electronegative Reactive Shroud Electrode (RSE). The RSE is polarized to alloy Li with the RSE and locally deplete Li near the liquid electrode before polarizing the liquid electronegative metal to deposit Sr and Cs. The construction and operation of the RSE and results of Sr and Cs separation tests will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Electrometallurgy, |