Pilot plant development of processes for the production of nuclear grade uranium dioxide

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dc.contributor.authorAlfredson, PGen_AU
dc.date.accessioned2022-09-13T00:28:48Zen_AU
dc.date.available2022-09-13T00:28:48Zen_AU
dc.date.issued1972-08-17en_AU
dc.date.statistics2022-07-20en_AU
dc.descriptionPhysical copy held by ANSTO Library at DDC 660.20994/3en_AU
dc.description.abstractMost types of nuclear power reactors use fuel in the form of high density uranium dioxide pellets clad in Zircaloy. Sinterable uranium dioxide powder is usually produced via the ammonium diuranate (ADU) route. This involves dissolution of uranium ore concentrates (yellow cake) in nitric acid, purification by solvent extraction using tributyl phosphate in kerosene, precipitation of ADU, filtration, drying, calcination and reduction with hydrogen to give uranium dioxide powder. The Australian Atomic Energy Commission has carried out pilot plant development of these processes to demonstrate the production of nuclear grade uranium dioxide from Australian yellow cake and to improve the processes and technology wherever possible. This paper describes the processes and equipment with particular reference to the improvements which have been made. The nitric acid requirements in the solvent extraction process have been substantially reduced and a pulsed fluidised bed reactor has been developed for the continuous calcination-reduction of ADU to uranium dioxide. The influence of the conditions for precipitation of ADU on its rate of filtration and on the fabrication behaviour of the uranium dioxide powder is also described.en_AU
dc.identifier.citationAlfredson. P. G. (1972). Pilot plant development of processes for the production of nuclear grade uranium dioxide. Paper presented to the 1972 Australian Chemical Engineering Conference: Development and innovation for Australian process industries, Newcastle, August 17 - 18, 1972, (pp.71-80).en_AU
dc.identifier.conferenceenddate18 August 1972en_AU
dc.identifier.conferencename1972 Australian Chemical Engineering Conference: Development and innovation for Australian process industriesen_AU
dc.identifier.conferenceplaceNewcastle, Australiaen_AU
dc.identifier.conferencestartdate17 August 1972en_AU
dc.identifier.issn0858250144en_AU
dc.identifier.pagination71-80en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/13797en_AU
dc.language.isoenen_AU
dc.publisherInstitution of Chemical Engineersen_AU
dc.subjectADUen_AU
dc.subjectCalcinationen_AU
dc.subjectFluidized bedsen_AU
dc.subjectReductionen_AU
dc.subjectSolvent extractionen_AU
dc.subjectUranium dioxideen_AU
dc.subjectZircaloyen_AU
dc.subjectANSTOen_AU
dc.titlePilot plant development of processes for the production of nuclear grade uranium dioxideen_AU
dc.typeConference Paperen_AU
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