PACKAGING PROCESS FOR SPENT FISSILE PRODUCTS RESULTING FROM THE REPROCESSING OF DRY IRRADIATED FUELS

摘要

Process for packaging the fission products obtained by dry process in order to produce a resulting product, offering great harmlessness with regard to the environment. The method according to the invention is characterized in that a mixture is formed comprising a major proportion of a zeolite of formula nSiO2, mAl2O3, MO, zH2O, in which M represents a sodium, potassium, rubidium atom, of cesium, calcium, strontium or barium and in which the n / m ratio varies between 2 and 16, and a minor proportion of crude fission products from treatment, the mixture is brought to its melting temperature and this is maintained. temperature until a homogeneous phase is obtained and allowed to cool. This process makes it possible to obtain a product with a well-defined mineral structure, in a form which is not dispersible and insoluble in water.