The role of sulphur compounds in glass melting

0093915 - ÚACH 2008 RIV GB eng J - Journal Article
Kloužek, Jaroslav - Arkosiová, Miroslava - Němec, Lubomír - Cincibusová, P.
The role of sulphur compounds in glass melting.
[Role sirných sloučenin ve skelné tavenině.]
Glass Technology-European Journal of Glass Science and Technology Part A. Roč. 48, č. 4 (2007), s. 176-182. ISSN 1753-3546. E-ISSN 1753-3554
Institutional research plan: CEZ:AV0Z40320502
Keywords : silica
Subject RIV: CA - Inorganic Chemistry
Impact factor: 0.414, year: 2007

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.

Je analyszována role sirných sloučenin ve skelné tavenině.
Permanent Link: http://hdl.handle.net/11104/0153831