Conversion kinetics of container glass batch melting

0534259 - ÚSMH 2022 RIV US eng J - Journal Article
Ueda, N. - Vernerová, Miroslava - Kloužek, Jaroslav - Ferkl, P. - Hrma, P. - Yano, T. - Pokorný, Richard
Conversion kinetics of container glass batch melting.
Journal of the American Ceramic Society. Roč. 104, č. 1 (2021), s. 34-44. ISSN 0002-7820. E-ISSN 1551-2916
Institutional support: RVO:67985891
Keywords : foaming * glass melting * processing
OECD category: Ceramics
Impact factor: 4.186, year: 2021
Method of publishing: Limited access
https://ceramics-onlinelibrary-wiley-com.ezproxy.lib.cas.cz/doi/full/10.1111/jace.17406

Understanding the batch-to-glass conversion process is fundamental to optimizing the performance of glass-melting furnaces and ensuring that furnace modeling can correctly predict the observed outcome when batch materials or furnace conditions change. To investigate the kinetics of silica dissolution, gas evolution, and primary foam formation and collapse, we performed X-ray diffraction, thermal gravimetry, feed expansion tests, and evolved gas analysis of batch samples heated at several constant heating rates. We found that gas evolving reactions, foaming, and silica dissolution depend on the thermal history of the batch in a similar manner: the kinetic parameters of each process were linear functions of the square root of the heating rate. This kinetic similarity reflects the stronger-than-expected interdependence of these processes. On the basis of our results, we suggest that changes in furnace operating conditions, such as firing or boosting, influence the melting rate less than what one would expect without consideration of batch conversion kinetics.
Permanent Link: http://hdl.handle.net/11104/0319431