Preparation and characterization of phosphate glass-ceramic wasteform with strontium fluoride
PUBLICATION: JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
AUTHORS: Zhou, S; Liu, XY; Qian, ZH; Qiao, YB; Yu, BW; Li, L; Wang, S; Qin, Q
ABSTRACT
Salt wastes containing halides from the molten salt reactor system are unstable during storage. These waste should be immobilized. In this paper, a glass-ceramic wasteform containing SrF2 is prepared from iron phosphate glass and fluorapatite (FAP) ceramic powder by a two-step sintering process. The results of XRD and SEM showed that main crystalline phase in samples is fluorapatite with Sr, and a large number of amorphous phase wrapped around the FAP. The result of product consistency test showed that the glass-ceramic sample has a good leaching resistance for wasteform long-term storage.
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