Service interruption on Monday 11 July from 12:30 to 13:00: all the sites of the CCSD (HAL, EpiSciences, SciencesConf, AureHAL) will be inaccessible (network hardware connection).
Skip to Main content Skip to Navigation
Journal articles

X‐ray imaging of a high‐temperature furnace applied to glass melting

Abstract : The dynamics of soda‐lime‐silica glass grain melting is investigated experimentally using a nonintrusive technique. A cylindrical alumina crucible is filled with glass cullet and placed into a furnace illuminated by an X‐ray source. This glass granular bed is gradually heated up to 1100°C, leading to its melting and the generation of a size‐distributed population of bubbles rising in the molten glass. An image processing algorithm of X‐ray images of the cullet bed during melting allows the characterization of bubbles size distribution in the crucible as well as their velocity. The introduction of tin dioxide μ‐particles in the glass matrix before melting enhances the texture of the images and makes possible the determination of the bubble‐induced molten glass velocity field by an optical flow technique. The bubble size distribution can be fitted by a log‐normal law, suggesting that it is closely related to the initial size distribution in the cullet bed. The liquid motion induced by the bubbles in Stokes' regime is strongly affected by the flow confinement and the determination of bubble rising velocity along its trajectory unveils the existence of local tiny temperature fluctuations in the crucible. Overall, the measuring techniques developed in this work seem to be very promising for the improvement of models and optimization of industrial glass furnaces.
Complete list of metadata

Cited literature [41 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-02309775
Contributor : Open Archive Toulouse Archive Ouverte (OATAO) Connect in order to contact the contributor
Submitted on : Wednesday, October 9, 2019 - 3:31:05 PM
Last modification on : Monday, July 4, 2022 - 8:56:11 AM

File

Bolore_24391.pdf
Files produced by the author(s)

Identifiers

Citation

Damien Boloré, Mathieu Gibilaro, Laurent Massot, Pierre Chamelot, Emmanuel Cid, et al.. X‐ray imaging of a high‐temperature furnace applied to glass melting. Journal of the American Ceramic Society, Wiley, 2019, pp.1-14. ⟨10.1111/jace.16809⟩. ⟨hal-02309775⟩

Share

Metrics

Record views

51

Files downloads

90