| About this Abstract |
| Meeting |
Materials Science & Technology 2012
|
| Symposium
|
Materials Issues in Nuclear Waste Management in the 21st Century
|
| Presentation Title |
The Effects of Lithium Nitrate on Highly Active Liquor in the Calcination Process |
| Author(s) |
Robert Shaw |
| On-Site Speaker (Planned) |
Robert Shaw |
| Abstract Scope |
Highly active liquor (HAL) is vitrified in a borosilicate glass matrix at Sellafield on the Waste Vitrification Plants (WVPs). The off gas stream from the vitrification process passes through a dust scrubber which can block and result in significant plant downtime. The mechanism by which blockages form is not fully understood and is the main focus of this paper. Lithium nitrate is used as a process aid to reduce the amount of dust carried over from the process to the dust scrubber. A series of experiments were set up to determine the effects of lithium nitrate on reactions within the HAL, over a range of residence times and temperatures. Using TGA, XRD and EDS analysis, it was shown that the addition of lithium nitrate and varying temperatures both play a vital role in the reactions which occur in the calcination process. |
| Proceedings Inclusion? |
Planned: |