Process for the preparation of graphite-clad nuclear fuel rods

Details Process for the preparation of graphite-clad nuclear fuel rods Process for the preparation of graphite-clad nuclear fuel rods

1975-03-17

1977-08-30

Sebastian, Leland A.

Plastic and nonmetallic article shaping or treating: processes

Shaping or treating radioactive material

176 89, G21C 2102, G21C 2116

Patent

active

040455262

ABSTRACT:
A process for the preparation of graphite-clad nuclear fuel rods comprising coating fine particles of a nuclear fuel such as uranium oxide or thorium oxide with a matrix material containing graphite powder and a binder to form matrix material-coated globules, charging the thus-formed globules, without or after being pre-molded into a green rod-like fuel compact, into the rubber mold of a rubber press molding machine, charging a similar matrix material in the gap between the globules or rod-like fuel compact and the inner wall of the rubber mold, compressing the whole mass in the direction from the side face of the whole mass to the axis thereof to form a green, graphite coat material-coated fuel compact, baking the thus-formed green fuel compact at a temperature of up to 1800.degree. C and, if desired, impregnating the baked product with a resin followed by being rebaked at a temperature of up to 1800.degree. C; and the graphite-clad nuclear fuel rods.

REFERENCES:
patent: 3158547 (1964-11-01), Smith
patent: 3166614 (1965-01-01), Taylor
patent: 3558750 (1971-01-01), Davis et al.
patent: 3900358 (1975-08-01), Bujas et al.
patent: 3912798 (1975-10-01), Rachor et al.

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