| 摘要 |
Sulphidation method for a UO<SUB>2 </SUB>powder, in which said powder is sulfurated by bringing it into contact with a gaseous sulphidation agent. Method for manufacturing nuclear fuel pellets based on uranium oxide, or mixed oxide of uranium and plutonium, from a load of totally or partially sulfurated UO<SUB>2 </SUB>powder or UO<SUB>2 </SUB>powder and PuO<SUB>2 </SUB>powder, by lubrication, pelletizing and sintering, in which: the load of powder subjected to the lubrication, pelletizing and sintering is prepared by the following successive steps: sulphidation of a UO<SUB>2 </SUB>powder by the above sulphidation method; optionally mixing, said sulfurated powder in a matrix comprising a UO<SUB>2 </SUB>powder, or of a UO<SUB>2 </SUB>powder and a PuO<SUB>2 </SUB>powder; and, subjecting said load, formed from said sulfurated powder or said mixture, to lubrication, pelletizing and sintering operations.
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