Effect of glass forming additives on low-activity waste feed conversion to glass

M Vernerová, K Šůsová, M Kohoutková… - Journal of Nuclear …, 2024 - Elsevier
A significant effort was invested in the past to develop and refine mathematical models that
relate the composition of nuclear waste glasses with their properties, such as viscosity …

Effect of Al and Fe sources on conversion of high-level nuclear waste feed to glass

J Marcial, J Kloužek, M Vernerová, P Ferkl… - Journal of Nuclear …, 2022 - Elsevier
Pilot-scale melter testing has shown that Al and Fe sources in high-level nuclear waste
feeds influence the glass production rate. To examine melting behaviors of these feeds, we …

[PDF][PDF] Effect of silica particle size on nuclear waste-to-glass conversion

DR Dixon, D Cutforth… - WM2017 …, 2017 - archivedproceedings.econference.io
The process for converting nuclear waste-to-glass in an electric melter occurs in the cold
cap, a crust of reacting solids floating on the glass pool. As the melter feed (a mixture of the …

Effect of melter feed foaming on heat flux to the cold cap

SM Lee, P Hrma, R Pokorny, J Klouzek… - Journal of nuclear …, 2017 - Elsevier
The glass production rate, which is crucial for the nuclear waste cleanup lifecycle, is
influenced by the chemical and mineralogical nature of melter feed constituents. The choice …

Conversion of nuclear waste to molten glass: cold‐cap reactions in crucible tests

K Xu, P Hrma, JA Rice, MJ Schweiger… - Journal of the …, 2016 - Wiley Online Library
The feed‐to‐glass conversion, which comprises complex chemical reactions and phase
transitions, occurs in the cold cap during nuclear waste vitrification. To investigate the …

Effect of water vapor and thermal history on nuclear waste feed conversion to glass

J Marcial, R Pokorný, J Kloužek… - … Journal of Applied …, 2021 - Wiley Online Library
Water affects the glass melting process by interacting with the foam layer at the glass melt
surface and by influencing the batch conversion reactions. Nuclear waste aqueous slurry …

Feed-to-glass conversion during low activity waste vitrification

M Hujova, J Klouzek, D Cutforth, S Lee, M Miller… - Ceramics …, 2020 - Elsevier
The thermal history of the nuclear waste feed during melting has a strong effect on the rate of
melting, thus strongly affecting the efficiency of the nuclear waste cleanup. Based on our …

Foaming during nuclear waste melter feeds conversion to glass: Application of evolved gas analysis

M Hujova, R Pokorny, J Klouzek, S Lee… - … Journal of Applied …, 2018 - Wiley Online Library
During the final stages of batch‐to‐glass conversion in a waste‐glass melter, gases evolving
in the cold cap produce primary foam, the formation and collapse of which control the glass …

Conversion of nuclear waste into nuclear waste glass: Experimental investigation and mathematical modeling

P Hrma - Procedia Materials Science, 2014 - Elsevier
The melter feed, slurry, or calcine charged on the top of a pool of molten glass forms a
floating layer of reacting material called the cold cap. Between the cold-cap top, which is …

Effect of bubbles and silica dissolution on melter feed rheology during conversion to glass

J Marcial, J Chun, P Hrma… - Environmental science & …, 2014 - ACS Publications
Nuclear-waste melter feeds are slurry mixtures of wastes with glass-forming and glass-
modifying additives (unless prefabricated frits are used), which are converted to molten …