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1. IN2653/KOLNP/2011 - METHOD AND ARRANGEMENT FOR PRODUCING FUEL CORES

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Aktenzeichen/Anmeldenummer 2653/KOLNP/2011
Anmeldedatum 27.06.2011
Veröffentlichungsnummer 2653/KOLNP/2011
Veröffentlichungsdatum 13.01.2012
Veröffentlichungsart A
IPC
G21C 3/42
GPhysik
21Kernphysik; Kerntechnik
CKernreaktoren
3Reaktor-Brennstoffelemente oder ihre Anordnung; Auswahl von Stoffen für die Verwendung als Reaktor-Brennstoff
42Auswahl von Stoffen zur Verwendung als Reaktorbrennstoff
Anmelder NUKEM TECHNOLOGIES GMBH
Erfinder HEIT, WERNER
KADNER, MARTIN
BRAEHLER, GEORG
FROSCHAUER, KARL
Prioritätsdaten 102008055468 01.12.2008 DE
Titel
(EN) METHOD AND ARRANGEMENT FOR PRODUCING FUEL CORES
Zusammenfassung
(EN)
The invention relates to a method and to an arrangement for producing sphericalfuel cores and/or breeder material cores by dripping a pouring solutioncontaining uranyl nitrate and a solution containing at least one auxiliary agentinto an ammoniacal precipitation bath in order to form microspheres, aging andwashing the microspheres produced in such a way in an ammonia solution,drying, and thermally treating said microspheres. In order to take intoconsideration the special characteristics of uranium chemistry for cores and toprovide a continuous production method along with a constantly high corequality in the method, it is proposed that the microspheres from the precipitationbath be separated through a first separator and fed to the ammoniacal agingwater for aging, that the contact duration of the microspheres with the liquid ofthe precipitation bath before being introduced into the aging water be set equallyor substantially equally, that the microspheres be transferred from the agingwater to a multi-stage cascade scrubber using a transfer device, wherein themicrospheres are washed in the multi-stage cascade scrubber so as to be free orsubstantially free from ammonium nitrate and at least one auxiliary agentcontained in the microspheres, and that after the microspheres are dried, themicrospheres are calcinated while distributed in a monolayer during a thermaltreatment.