Glass formation development and testing for the vitrification of cesium-loaded Crystalline Silicotitanate (CST)
As part of a joint project between the Oak Ridge National Laboratory (ORNL) and the Savannah River Technology Center (SRTC), Melton Valley Storage Tank supernate will be passed through a column of crystalline silicotitanate (CST) sorbent at ORNL. The cesium-loaded CST sorbent will subsequently be shipped to the SRTC for vitrification in a joule-heated melter. The CST sorbent contains significant quantities of titanium which historically have been difficult to incorporate into the glass structure. Therefore, crucible studies were performed to develop a glass formulation that could be processed in the SRTC shielded cells melter. Additional tests were conducted to increase the waste loading and optimize the composition. These studies showed that waste loadings up to 60 wt percent CST could be obtained. The results of the crucible melts were used to determine the liquidus temperature, viscosity, and durability of the glass waste form. This paper will present the results of the formulation efforts.
- Research Organization:
- Westinghouse Savannah River Co., Aiken, SC (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC09-96SR18500
- OSTI ID:
- 503518
- Report Number(s):
- WSRC-MS--97-0041; CONF-970677--10; ON: DE97060205
- Country of Publication:
- United States
- Language:
- English
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