About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
N-10: Measurement of Vapor Pressure of UCl3 in NaCl-MgCl2-UCl3 via Transpiration Experiments |
| Author(s) |
Jacob Yankey, Easton Sadler, Marisa Monreal, Matt Jackson, Scott Parker, Suhee Choi, Mario Gonzalez, Michael F. Simpson |
| On-Site Speaker (Planned) |
Jacob Yankey |
| Abstract Scope |
Mixtures of eutectic NaCl-MgCl2 with various concentrations of added UCl3 were used in transpiration experiments to estimate the vapor pressure and activity coefficient of UCl3 in this molten salt mixture. The motivation for this work is to develop property measurement methods relevant to molten salt reactors. A key to our approach is careful preparation of the salt. Molten NaCl-MgCl2 was thermally dehydrated and treated with anhydrous HCl gas to remove oxygen-containing species from the salt. Residual OH-/O2- concentration was measured via acid-base titration. UCl3 was then formed via chlorination of U metal with FeCl2 in-situ in the molten salt mixture and quantified via inductively coupled plasma mass spectrometry (ICP-MS). The range of U concentrations in the salt was 1-10 wt%. Vapor pressure results calculated from salt mass loss and ICP-MS analysis of salt condensate will be reported over a range of 500 to 700oC. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Pyrometallurgy, Characterization, Electrometallurgy |