About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Progressive Solutions to Improve the Corrosion Resistance of Nuclear Waste Storage Materials
|
| Presentation Title |
Developing Glass Frits for Hanford High-Level Waste Immobilization |
| Author(s) |
Brynn McGrail, John Vienna, José Marcial, Xiaonan Lu, Jess Rigby |
| On-Site Speaker (Planned) |
Brynn McGrail |
| Abstract Scope |
At the Hanford Waste Treatment and Immobilization Plant (WTP), the process of vitrification will convert the chemically complex tank waste into a durable borosilicate glass form. Research is being performed to evaluate potential glass forming chemical (GFC) delivery methods. To date, individual mineral GFCs have been used in testing the high-level waste (HLW) vitrification process. However, the use of individual mineral GFC delivery was plagued by technical difficulties at the low-activity waste vitrification facility. To reduce technical issues seen with raw material handling and delivery, pre-fritted GFCs are being tested. Five frits (pre-melted blends of GFCs in the form of granular glasses) were formulated based on HLW compositions. The frits are prepared into melter feeds with varying frit particle sizes and aging time of the frit. By testing the rheological and physical characteristics, this study helps determine if they are a viable method of GFC delivery for Hanford HLW immobilization. |