| 简介 |
The invention relates to a method of converting an alkaline-earth metal chloride to at least one salt chosen from the tungstates and molybdates of this metal, which comprises the reaction of the alkaline-earth metal chloride with at least one tungsten or molybdenum precursor chosen from tungsten oxides, molybdenum oxides, tungstates and molybdates, this reaction being carried out in a solvent composed of KCl or of an LiCl/KCl mixture and at a temperature at least equal to the melting point of this solvent. Applications : synthesis of alkaline-earth metal tungstates and molybdates, extraction of alkaline-earth metals from media in which they are in the form of chlorides, recovery of alkaline-earth fission products from a saline stream in the context of reprocessing an irradiated nuclear fuel in molten chloride media, etc. |
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