Reaction path of a way of synthetis of nepheline NaAlSiO4Report as inadecuate

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1 ProcESS-ENSMSE - Département Procédés et évolution des systèmes avec solides 2 SPIN-ENSMSE - Centre Sciences des Processus Industriels et Naturels 3 DESD-SEP-LEMC

Abstract : The transformation of a simulated nuclear waste into nepheline NaAlSiO4 has been studied, using thermogravimetry, mass spectrometry and X-Ray diffraction. Several mixtures have been used, which were elaborated from a simulated waste containing mainly sodium nitrate, alumina and silica. Considering the various mass losses observed, the phases obtained after each mass loss identified by X-Ray diffraction and the gases released, a reaction path for the transformation has been proposed.

Keywords : nepheline NaAlSiO4 simulated nuclear waste sodium nitrate alumina silica thermogravimetry mass spectrometry X-Ray diffraction

Author: Françoise Valdivieso - Michèle Pijolat - Olivier Fiquet -



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