Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1482728 | Journal of Non-Crystalline Solids | 2010 | 9 Pages |
Abstract
The study describes the incorporation of solid silica into molten glass during glass-batch melting as a function of the grain size in the range from 5 to 275 µm. Whereas tiny grains formed a bubbly melt, very large grains formed slowly dissolving clusters. Silica grains are forced to clusters by rising bubbles. The impact of the silica grain size on the glass-forming melt viscosity, overall density, thermal conductivity, and compositional homogeneity, as well as the consequences of these effects on glass processing in melting furnaces, is discussed. A high-alumina borosilicate glass for nuclear waste vitrification was chosen for the study, but the authors believe that the observed behaviors also occur in the melting of commercial batches.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Michael J. Schweiger, Pavel Hrma, Carissa J. Humrickhouse, José Marcial, Brian J. Riley, Nathan E. TeGrotenhuis,