| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
New Directions in Mineral Processing, Extractive Metallurgy, Recycling and Waste Minimization: An EPD Symposium in Honor of Patrick R. Taylor
|
| Presentation Title |
Electrowinning Impurities Out of Flowing Molten Chloride Salt for Heat Transfer Fluid Applications |
| Author(s) |
Liam Witteman, Kerry Rippy, Patrick R. Taylor, Judith Vidal |
| On-Site Speaker (Planned) |
Liam Witteman |
| Abstract Scope |
The concentrated solar power and nuclear industry have garnered great interest in employing molten chloride salts as a heat transfer fluid; specifically, a blend of Mg-K-Na chloride salt. However, salt exposure to moisture results in highly corrosive oxide/hydroxide impurities and requires the need for salt purification.
Typical salt purification strategies focus on the initial salt melting stage only and do not translate to on-line purification in a flowing salt loop. However, a novel strategy of electrowinning oxide/hydroxide impurities using Mg anodes and W cathodes has been demonstrated successfully in the laboratory.
Here, we present a novel electrowinning reactor designed to continuously remove corrosive impurities out of flowing molten chloride salt at 500 °C. We will highlight preliminary results from flowing molten salt tests and evaluate the reactor’s utility at industrially relevant scales. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Electrometallurgy, Energy Conversion and Storage, Sustainability |