METHOD OF PREPARING CHARGE MIXTURE FOR MAKING CERMET RODS OF NUCLEAR REACTOR FUEL ELEMENTS Russian patent published in 2012 - IPC G21C3/10 G21C3/62 

FIELD: physics, nuclear.

SUBSTANCE: invention relates to nuclear power, particularly to methods used in preparing charge mixture from a mixture of nuclear fuel powder and matrix material for moulding cermet rods of nuclear reactor fuel elements. Binding material is added to nuclear fuel powder with the following ratio of components: paraffin (7.5-32) wt %, wax (2-10) wt %, trichloroethylene - the balance. Powder particles are coated with a film of the binding material by drying before obtaining quick granules. The coated powder is mixed with powder of the matrix material. The mixture is stirred until obtaining conglomerated particles and excess powder of the matrix material is removed.

EFFECT: invention increases radiation stability of the fuel composition by reducing the probability of disintegration of the fuel particles.

2 dwg