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PROCESS FOR SEPARATING NIOBIUM, ANTIMONY AND / OR AT LEAST ONE ELEMENT FROM GROUPS VIIB AND VIII FROM AQUEOUS SOLUTIONS FROM THE PROCESSING OF USED NUCLEAR FUELS.
PROCESS FOR SEPARATING NIOBIUM, ANTIMONY AND / OR AT LEAST ONE ELEMENT FROM GROUPS VIIB AND VIII FROM AQUEOUS SOLUTIONS FROM THE PROCESSING OF USED NUCLEAR FUELS.
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机译:从使用过的核燃料加工中的水溶液中分离出VIIb和VIII族的铌,锑和/或至少一种元素的方法。
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摘要
Process for isolating at least one element such as Nb, Sb, Ce+Pr, the actinides and the elements of groups VIIb and VIII of the Periodic Classification of the elements from aqueous solutions originating from the reprocessing of spent nuclear fuels. This process consists in bringing the said aqueous solution into contact with a solid resin based on vinylpyridine polymer or copolymer and in separating from the said solution the resin which has bound the said element(s). The resin is in particular a crosslinked poly(4-vinylpyridine) powder and the isolated elements are, for example, ruthenium, rhodium, palladium, technetium, manganese, cobalt, iron, nickel, cerium and praseodymium.
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