Kloužek, Jaroslav (UACH-T) Arkosiová, Miroslava (UACH-T) Němec, Lubomír (UACH-T) Cincibusová, P. (CZ)
Source Title
Glass Technology-European Journal of Glass Science and Technology Part A
- ISSN 1753-3546
Roč. 48, č. 4 (2007), s. 176-182
Number of pages
7 s.
Language
eng - English
Country
GB - United Kingdom
Keywords
silica
Subject RIV
CA - Inorganic Chemistry
CEZ
AV0Z40320502 - UACH-T (2005-2011)
Annotation
Evolved gas analysis (EGA) coupled with mass spectrometry, high temperature observation of the homogenisation of glass melts coupled with image analysis, x-ray diffraction and x-ray fluorescence were used to follow and elucidate the role of sulphur compounds during melting of a soda-lime-silica batch doped with sodium sulphate and carbon. The results of EGA analysis have shown that both carbon and carbon monoxide during the process may serve as reducing agents and that the ratio between carbon and sodium sulphate, as well as kinetic conditions determine the extent of sulphate reducing reactions. High temperature observations and x-ray analyses show that the subsequent reactions between sodium sulphate and sulphide and thermal decomposition of remaining sulphate accelerate fining of the melt, sand dissolution and lead to bubble nucleation and foaming.
Workplace
Institute of Inorganic Chemistry
Contact
Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931
Year of Publishing
2008
Number of the records: 1
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