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Characteristics of Solidified Products Containing Radioactive Molten Salt Waste

机译:含放射性熔盐废物的固化产品的特性

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The molten salt waste from a pyroprocess to recover uranium and transuranic elements is one of the problematic radioactive wastes to be solidified into a durable wasteform for its final disposal. By using a novel method, named as the GRSS (gel-route stabilization/solidification) method, a molten salt waste was treated to produce a unique wasteform. A borosilicate glass as a chemical binder dissolves the silicate compounds in the gel products to produce one amorphous phase while most of the phosphates are encapsulated by the vitrified phase. Also, Cs in the gel product is preferentially situated in the silicate phase, and it is vitrified into a glassy phase after a heat treatment. The Sr-containing phase is mainly phosphate compounds and encapsulated by the glassy phase.
机译:热解过程中回收铀和超铀元素的熔融盐废料是有问题的放射性废料之一,将被固化成耐用的废料形式以进行最终处置。通过使用一种称为GRSS(凝胶路径稳定/固化)方法的新颖方法,可以处理熔融盐废料,从而产生独特的废料形式。硼硅酸盐玻璃作为一种化学粘合剂,将硅酸盐化合物溶解在凝胶产品中,产生一种无定形相,而大多数磷酸盐则被玻璃化相包裹。另外,凝胶产物中的Cs优选位于硅酸盐相中,并且在热处理后玻璃化成玻璃态。含Sr相主要是磷酸盐化合物,并且被玻璃相包裹。

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