Effects of heating rate, quartz particle size, viscosity, and form of glass additives on high‐level waste melter feed volume expansion

Nuclear waste can be vitrified by mixing it with glass‐forming and ‐modifying additives. The resulting feed is charged into an electric glass melter. To comprehend melting behavior of a high‐alumina melter feed, we monitored the volume expansion of pellets in response to heating at different heating...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2017-02, Vol.100 (2), p.583-591
Main Authors: Lee, SeungMin, VanderVeer, Bradley J., Hrma, Pavel, Hilliard, Zachary J., Heilman‐Moore, Jayven S., Bonham, Charles C., Pokorny, Richard, Dixon, Derek R., Schweiger, Michael J., Kruger, Albert A.
Format: Article
Language:English
Subjects:
Additives
Alumina
cold cap
Foams
frit
Glass
glass‐forming and ‐modifying chemicals
Heating
heating rate
high‐level waste
Melts
Pellets
Quartz
quartz particle size
Radioactive wastes
Viscosity
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Summary:Nuclear waste can be vitrified by mixing it with glass‐forming and ‐modifying additives. The resulting feed is charged into an electric glass melter. To comprehend melting behavior of a high‐alumina melter feed, we monitored the volume expansion of pellets in response to heating at different heating rates. The feeds were prepared with different particle sizes of quartz (the major additive component) and with varied silica‐to‐fluxes ratio to investigate the glass melt viscosity effects. Also, we used additional melter feeds with additives premelted into glass frit. The volume of pellets was nearly constant at temperatures
ISSN:0002-7820
1551-2916
DOI:10.1111/jace.14629