Laboratory development of the grind-leach process for the H.T.G.C.R. fuel cycle, Part 1 - dissolution of urania-thoria fuel particles in nitric acid solutions.

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dc.contributor.authorFarrell, MSen_AU
dc.contributor.authorIsaacs, SRen_AU
dc.date.accessioned2007-11-22T04:10:25Zen_AU
dc.date.accessioned2010-04-30T04:31:37Zen_AU
dc.date.available2007-11-22T04:10:25Zen_AU
dc.date.available2010-04-30T04:31:37Zen_AU
dc.date.issued1965-09en_AU
dc.description.abstractThe dissolution of 5 w/o UO2 in ThO2 fuel particles in nitric acid — fluoride solutions is a function of the Th02 dissolution rate. The Th02 dissolution rate has an apparent first order dependency on nitric acid concentration and a fractional order dependency on fluoride ion concentration. The apparent activation energy of the dissolution of the Th02 in 13M nitric acid — 0-05M fluoride is 19 kcal/mole. The presence of metal ions such as zirconium, aluminium, and beryllium inhibits the dissolution of the thoria. The order of inhibiting power is ZrlV > AlIII > BeII and this order is the same as the stability of their simplest fluoro — complexes, The addition of small quantities of sulphate also seriously inhibits the dissolution, precipitating thorium as Th(S04)2 , 4H20 and quantitatively removing the fluoride.en_AU
dc.identifier.citationFarrell, M. S., & Isaacs, S. R.(1965). Laboratory development of the grind-leach process for the H.T.C.G.R. fuel cycle, part 1 - dissolution of urania- thoria fuel particles in nitric acid solutions (AAEC/E143). Lucas Heights, NSW: Research Establishment, Australian Atomic Energy Commission.en_AU
dc.identifier.govdoc292en_AU
dc.identifier.otherAAEC-E-143en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/92en_AU
dc.language.isoen_auen_AU
dc.publisherAustralian Atomic Energy Commissionen_AU
dc.subjectGrindingen_AU
dc.subjectLeachingen_AU
dc.subjectFuel cycleen_AU
dc.subjectFuel particlesen_AU
dc.subjectNitric aciden_AU
dc.subjectUraniumen_AU
dc.subjectThoriumen_AU
dc.titleLaboratory development of the grind-leach process for the H.T.G.C.R. fuel cycle, Part 1 - dissolution of urania-thoria fuel particles in nitric acid solutions.en_AU
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