| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Rare Metal Extraction & Processing
|
| Presentation Title |
Theoretical Study on the Separation of Impurity Tellurium from Crude Selenium by Vacuum Distillation |
| Author(s) |
Xin Yu, Guozheng Zha, Wenlong Jiang |
| On-Site Speaker (Planned) |
Guozheng Zha |
| Abstract Scope |
Tellurium is the main impurity in crude selenium that is difficult to remove. The theoretical research on the separation of tellurium by vacuum distillation from crude selenium can provide more key data support for the industrial production. In this work, the theoretical and experimental studies on the separation of impurity tellurium from crude selenium by vacuum distillation were systematically carried out. The saturated vapor pressure, separation coefficient, vapor-liquid equilibrium composition, average molecular free path and evaporation rate of selenium and tellurium under different distillation conditions were calculated theoretically. We conducted research on the volatilization characteristics of crude selenium and measured the volatilization rate of crude selenium under pressure of 498K-573K and 10Pa-500Pa using vacuum differential method. The volatilization rate values of crude selenium under different conditions were obtained, and the influence of distillation temperature and system pressure on the volatilization rate of crude selenium was obtained. |
| Proceedings Inclusion? |
Planned: |