Process for the coating of particles for the production of fuel

Details Process for the coating of particles for the production of fuel Process for the coating of particles for the production of fuel

1978-01-03

1982-08-03

Silverberg, Sam

Coating apparatus

Gas or vapor deposition

Means to coat or impregnate particulate matter

C23C 1110

Patent

active

043422845

ABSTRACT:
Fuel, fertile material and/or absorber material containing particles for fuel and/or absorber elements in nuclear reactors are coated by a process comprising introducing thermally cleavable gases in the reaction space heated to above 1000.degree. C. of a fluidized bed unit with the help of a gas inlet nozzle cooled with a cooling medium and having an elongated inlet tube, decomposing the cleavable gases after leaving the nozzle, depositing the decomposition products on fuel, fertile material or absorber particles present in the fluidized bed and bringing these coated particles into fuel elements or absorber elements. The cooling medium is solely gaseous and only the portion of the inlet tube for the nozzle tips of the gas inlet nozzles within the axis are cooled and the heat flow penetrating from outside is reduced by heat insulation. An apparatus for carrying out the process is also described.

REFERENCES:
patent: 3398718 (1968-08-01), Pilloton
patent: 3566830 (1978-01-01), Flamm

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