METHOD AND DEVICE FOR MAKING NUCLEAR FUEL BODY OF OXIDE COMPOUND

摘要

Manufacture of oxidic nuclear fuel bodies with oxygen-to-metal ratio of 2.0+/-0.02 at relatively low sintering temperature in range of 1000 DEG -1400 DEG C. Nuclear fuel powder with an arbitrary oxygen-to-metal ratio is mixed with a grain-growth promoting additive (U3O8) and pressed into blanks. The blanks are subjected to a two-stage operation in a furnace at 1000 DEG -1400 DEG C. - an oxidative-sintering stage in a carbon dioxide atmosphere and a reducing stage in a hydrogen containing atmosphere.