The corrosion of zircon refractories by molten glasses Part 1. The effect of the porosity of zircon refractories on their resistance to corrosion by a calcium alumino-borosilicate glass

GT V2 1961 218-226

Examination of the collected results of a number of stirring corrosion tests on various sintered zircon materials in a calcium alumino-borosilicate glass at 1450" C has shown that there was a highly significant degree of correlation between the percentage apparent porosity of these materials and their percentage loss in volume during test. The actual increase in the percentage loss of volume was, however, comparatively small over the range of porosities examined. The volume loss calculated. for zircon of zero porosity increased linearly with the duration of the test, within the range of stirring times investigated. For shorter stirring times, however, the relationship was not linear. The correlation between the apparent porosity of the specimens and their calculated loss by weight was not significant, and a possible reason for this is advanced.

E. Vago & C. F. Grzfith
Pilkington Brothers Limited, Research Laboratories, Lathom, Lancs