Coating processes – Radioactive base or coating – Particles or nuclear reactor fuel elements coated
Patent
1977-06-10
1981-06-02
Silverberg, Sam
Coating processes
Radioactive base or coating
Particles or nuclear reactor fuel elements coated
118716, 427213, C23C 1102
Patent
active
042712076
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, decomposiing 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 glow 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 (1971-03-01), Flamm
Unit Operations of Chemic. Eng. 2 Edition, McCabe & Smith, p. 415, McGraw-Hill.
Loser Harald
Schmidt Gerhard
Warzawa Wolfgang
Wegner Klaus
Hobeg Hochtemperaturreaktor-Brennelement GmbH
Silverberg Sam
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