Graphite fuel studies, Part 2: fine grinding of artificial graphite

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dc.contributor.authorMay, JRen_AU
dc.contributor.authorWarner, RKen_AU
dc.date.accessioned2007-11-22T04:26:38Zen_AU
dc.date.accessioned2010-04-30T04:37:43Zen_AU
dc.date.available2007-11-22T04:26:38Zen_AU
dc.date.available2010-04-30T04:37:43Zen_AU
dc.date.issued1959-03en_AU
dc.description.abstractHomogeneous dispersions of fissile and fertile material in graphite are being currently considered as fuel for high-temperature, gas-cooled nuclear reactors. A possible method of fuel preparation involves compaction of finely ground artificial graphite with U and Th metal powders. Size reduction of artificial graphite is therefore of interest in the preparation of graphite-fuel compacts. Reactor graphite has been successively size reduced in a jaw crusher, pin disc mill and ball mill to give material 50% finer than 9 microns, and with a B.E.T. nitrogen adsorption surface area ranging up to 18.4 m2/g. This variables in ball milling have been studied, and in particular it was found that Ni-hard balls gave a faster grinding rate, but a higher contamination than was obtained with steel balls. Leaching with boiling HCI was effective in removing contamination introduced by these grinding media. The Rosin-Rammler function, R = 100e - (x/x)n applied to the size distributions of the ground graphite. In the size range 70-1000 microns the distribution constant "n" equaled 1, which is consistent with publishing data for other materials. However, above and below this size range, the distribution constant approximated 2. This high value of n for the sub-sieve range has not been previously reported, but is not peculiar to artificial graphite as other materials were found to have a similar value of n.en_AU
dc.identifier.citationMay, J. R., Warner, R. K. (1959). Graphite fuel studies, Part 2: fine grinding of artificial graphite. (AAEC/E41). Lucas Heights, NSW: Australian Atomic Energy Commission.en_AU
dc.identifier.govdoc633en_AU
dc.identifier.otherAAEC-E-41en_AU
dc.identifier.placeofpublicationLucas Heights, New South Walesen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/623en_AU
dc.language.isoen_auen_AU
dc.publisherAustralian Atomic Energy Commissionen_AU
dc.subjectGraphiteen_AU
dc.subjectGrindingen_AU
dc.subjectDispersionsen_AU
dc.subjectGas cooled reactorsen_AU
dc.subjectFuelsen_AU
dc.titleGraphite fuel studies, Part 2: fine grinding of artificial graphiteen_AU
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