Verfahren zum homogenen Vermischen Uran/Plutonium-Mischoxid

A method for homogeneously mixing a uranium/plutonium mixed oxide which is used for the preparation of a uranium/ plutonium mixed oxide fuel. The method comprises weighing a uranium oxide powder, a plutonium oxide powder, and a dry recovered powder prepared by grinding a uranium/plutonium mixed oxid...

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Bibliographische Detailangaben
Hauptverfasser:	KAYANO, MASASHI, JIKE, JUNJI, AOKI, YOSHIKAZU
Format:	Patent
Sprache:	ger
Schlagworte:	CRUSHING, PULVERISING, OR DISINTEGRATING CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL MILLING GRAIN MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR REACTORS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS PREPARATORY TREATMENT OF GRAIN FOR MILLING TRANSPORTING
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Beschreibung
Zusammenfassung:	A method for homogeneously mixing a uranium/plutonium mixed oxide which is used for the preparation of a uranium/ plutonium mixed oxide fuel. The method comprises weighing a uranium oxide powder, a plutonium oxide powder, and a dry recovered powder prepared by grinding a uranium/plutonium mixed oxide sinter so as to give a predetermined plutonium enrichment; roughly mixing these powders together by means of a mixer; pulverizing and homogeneously mixing the roughly mixed powder by means of a jet mill (16); discharging the homogeneously mixed powder together with compressed air from the jet mill; and separating the mixed powder from the air by means of a first-stage cyclone (18) to recover at least 90% of the discharged powder.