About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Materials and Chemistry for Molten Salt Systems
|
Presentation Title |
O-6: Purification of Lithium, Sodium, and Potassium-based Chloride Salts via Hydrochlorination with Real-time Monitoring |
Author(s) |
Mario Alberto Gonzalez, Jarom Chamberlain, Jacob Yankee, Suhee Choi, Matthew Newton, Ethan Hamilton, Michael Forrest Simpson |
On-Site Speaker (Planned) |
Mario Alberto Gonzalez |
Abstract Scope |
Incomplete water removal from halide salts can lead to hydrolysis at temperatures required to melt them. This can lead to the formation of volatile HCl and salt-soluble oxide and/or hydroxide impurities, which increase the corrosivity of the salt towards metals. In electrolytic processes, oxides and hydroxides can contribute to low cell efficiencies. Anhydrous HCl bubbled into molten salts can react with these impurities and remove them as volatile water. A system has thus been designed, built, and extensively tested for hydrochlorinating molten salts at temperatures up to 550oC using 5% HCl in argon. The off-gas is bubbled through an auto-titrator to determine when reaction of HCl has ceased. In-process and ex-process titration data will be presented for purification performed on a variety of salts including eutectic LiCl-KCl, NaCl-CaCl2, NaCl-MgCl2, and NaCl-KCl-MgCl2. The procedure, techniques, and parameters for salt purification via hydrochlorination will be reported in this presentation. |
Proceedings Inclusion? |
Planned: |
Keywords |
Pyrometallurgy, Nuclear Materials, |