About: Kinetic model for quartz and spinel dissolution during melting of high-level-waste glass batch     Goto   Sponge   NotDistinct   Permalink

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Description
  • The dissolution of quartz particles and the growth and dissolution of crystalline phases during the conversion of batch to glass potentially affects both the glass melting process and product quality. Crystals of spinel exiting the cold cap to molten glass below can be troublesome during the vitrification of iron-containing high-level wastes. To estimate the distribution of quartz and spinel fractions within the cold cap, we used kinetic models that relate fractions of these phases to temperature and heating rate. Fitting the model equations to data showed that the heating rate, apart from affecting quartz and spinel behavior directly, also affects them indirectly via concurrent processes, such as the formation and motion of bubbles. Because of these indirect effects, it was necessary to allow one kinetic parameter (the pre-exponential factor) to vary with the heating rate. The resulting kinetic equations are sufficiently simple for the detailed modeling of batch-to-glass conversion as it occurs in glass melters. The estimated fractions and sizes of quartz and spinel particles as they leave the cold cap, determined in this study, will provide the source terms needed for modeling the behavior of these solid particles within the flow of molten glass in the melter.
  • The dissolution of quartz particles and the growth and dissolution of crystalline phases during the conversion of batch to glass potentially affects both the glass melting process and product quality. Crystals of spinel exiting the cold cap to molten glass below can be troublesome during the vitrification of iron-containing high-level wastes. To estimate the distribution of quartz and spinel fractions within the cold cap, we used kinetic models that relate fractions of these phases to temperature and heating rate. Fitting the model equations to data showed that the heating rate, apart from affecting quartz and spinel behavior directly, also affects them indirectly via concurrent processes, such as the formation and motion of bubbles. Because of these indirect effects, it was necessary to allow one kinetic parameter (the pre-exponential factor) to vary with the heating rate. The resulting kinetic equations are sufficiently simple for the detailed modeling of batch-to-glass conversion as it occurs in glass melters. The estimated fractions and sizes of quartz and spinel particles as they leave the cold cap, determined in this study, will provide the source terms needed for modeling the behavior of these solid particles within the flow of molten glass in the melter. (en)
Title
  • Kinetic model for quartz and spinel dissolution during melting of high-level-waste glass batch
  • Kinetic model for quartz and spinel dissolution during melting of high-level-waste glass batch (en)
skos:prefLabel
  • Kinetic model for quartz and spinel dissolution during melting of high-level-waste glass batch
  • Kinetic model for quartz and spinel dissolution during melting of high-level-waste glass batch (en)
skos:notation
  • RIV/60461373:22340/13:43895653!RIV14-MSM-22340___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • S
http://linked.open...iv/cisloPeriodika
  • 1-3
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 82652
http://linked.open...ai/riv/idVysledku
  • RIV/60461373:22340/13:43895653
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Batch melting, Cold cap, Quartz, Spinel, Waste glass (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • NL - Nizozemsko
http://linked.open...ontrolniKodProRIV
  • [07D06A8A0E1D]
http://linked.open...i/riv/nazevZdroje
  • Journal of nuclear materials
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 443
http://linked.open...iv/tvurceVysledku
  • Pokorný, Richard
  • Hrma, Pavel
  • Rice, Jarrett A.
  • Schweiger, Michael J.
  • Crum, Jarrod V.
http://linked.open...ain/vavai/riv/wos
  • 000327905800032
issn
  • 0022-3115
number of pages
http://bibframe.org/vocab/doi
  • 10.1016/j.jnucmat.2013.07.039
http://localhost/t...ganizacniJednotka
  • 22340
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