Verfahren zur Aufbereitung von zum Teil aus Graphit bestehenden Schalenkoernern (coated particles) und Brenn- oder Brutelementen

摘要

1,176,024. Reprocessing nuclear fuel. KERNFORSCHUNGSANLAGE JULICH G.m.b.H. 14 April, 1967 [23 April, 1966], No. 17345/67. Heading G6R. Graphite-containing nuclear fuel or fuel elements are reprocessed by treatment with an alkali metal, followed by separation of the disintegrated graphite. Caesium or potassium may be employed in the vapour state under reduced pressure at 300-1000‹ C., the graphite being removed by passage of a current of air. Fuel particles coated with graphite are treated in a fluidized bed or a rotary tubular furnace and may be re-coated using a fluidized bed process.