METHOD OF PELLETED FUEL MANUFACTURE FOR FUEL ELEMENTS OF NUCLEAR REACTOR Russian patent published in 2008 - IPC G21C3/62 G21C21/10 

FIELD: nuclear power industry.

SUBSTANCE: processing of uranium dioxide UO₂ powder or mixture of uranium dioxide UO₂ and uranium oxide U₃O₈ powders makes it possible to prepare press-powder that consists of mixture of uranium dioxide UO₂ powder up to 85% and uranium oxide U₃O₈ powder of up to 15%, without increase of volume fraction of open pores of more than 1%, and also makes it possible to prepare pressed pellets with density of up to 6 g/cm³ at pressing pressures of up to 4500 kgf/cm² without generation of cracks and with even shrinkage during sintering, which makes it possible to reduce wastes during polishing of pellets.

EFFECT: increase of specific efficiency of pellet sintering lines.

4 dwg