About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Computational Thermodynamics and Kinetics
|
Presentation Title |
Thermodynamic Investigation of Multicomponent Chloride Molten Salts for Spent Fuel Processing |
Author(s) |
Liangyan Hao, Soumya Sridar, Thomas Kirtley, Ethan Schneider, Elizabeth Sooby, Wei Xiong |
On-Site Speaker (Planned) |
Wei Xiong |
Abstract Scope |
Pyroprocessing has been developed to recycle uranium from spent fuels and thus reduce radioactive wastes. To effectively monitor the change of thermodynamic properties and liquidus temperature for the molten salt electrolyte with composition, a multicomponent thermodynamic database for the KCl-LiCl-NaCl-UCl3-LnCl3 (Ln=La, Nd, Pr) will be established. Based on the SGTE Substance Database, fifteen binary systems and several key ternary systems have been optimized to satisfactorily reproduce experimental phase equilibria and thermodynamic properties data. Thermal analysis was firstly performed to study the phase equilibria in the KCl-NaCl-UCl3 and LiCl-NaCl-UCl3 systems and support the thermodynamic modeling. In this talk, we also highlight the importance of unifying the Gibbs free energy of the unary molten salts, which directly impacts the quality of the multicomponent database. The established molten salt database will contribute to the development of advanced reactors, such as small modular reactors. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Nuclear Materials, Modeling and Simulation |