Sintering nuclear fuel pellets

Details Sintering nuclear fuel pellets Sintering nuclear fuel pellets

G - Physics

21

K

39/34, 31/84, 31

G21K 1/00 (2006.01) C04B 35/64 (2006.01) F27B 19/04 (2006.01) G21C 3/62 (2006.01) G21C 19/00 (2006.01)

Patent

CA 1093293

ABSTRACT Sintering nuclear fuel pellets of nuclear fuel oxides having oxygen in stoichiometric excess of the dioxides by passing the nuclear fuel pellets through a reduction furnace having a reducing atmosphere under regu- lated exposure time or residence time to produce reduced nuclear fuel oxides of desired oxygen content, The reduced pellets are cooled and sent to an intermediate station for checking or holding. The cooled pellets from the intermediate station are sent through a sintering furnace with means for independently regulating the exposure time or residence time in the sintering furnace. Additional features are the independent control of the atmospheres and temperature as well as the humidity concentration in each furnace. Less expensive nitrogen gas may efficiently be used in the process.

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