Float glass production needs a tin bath and a tin bath needs bottom blocks. Fireclay refractory blocks are susceptible to Na2O attack and hence a build-up of nepheline. This article decribes research on alternative materials which has highlighted calcium alumina blocks as particularly resistant to this problem.
Origin
Routschka Research Inst, Bonn, Germany
Journal Title
Glass International June 1994 21, 23-24, 26
Sector
Flat glass
Class
F 414