UNIFORMIZATION MIXING METHOD OF URANIUM/PLUTONIUM MIXED OXIDE

PROBLEM TO BE SOLVED: To uniformly mix a plurality of kinds of powder with different density difference, while grinding them efficiently without any risk of oxidizing powder, and to miniaturize a system and to enable the system to be maintained easily. SOLUTION: Uranium oxide powder, plutonium oxide...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TERAYA JUNJI, AOKI GIICHI, KAYANO MASASHI
Format:	Patent
Sprache:	eng
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:	PROBLEM TO BE SOLVED: To uniformly mix a plurality of kinds of powder with different density difference, while grinding them efficiently without any risk of oxidizing powder, and to miniaturize a system and to enable the system to be maintained easily. SOLUTION: Uranium oxide powder, plutonium oxide powder, and a dry collection powder obtained by grinding uranium/plutonium mixed oxide sintered body are weighed to obtain a specific plutonium contents, the powders are roughly mixed by a mixer, the mixed powder is finely ground by a jet mill 16 and at the same time is uniformly mixed, the uniformly mixed powder is discharged from the jet mill 16 with compression air, and 90% or more of the discharged powder is separated from air by a first-stage cyclone 18 and is collected.