Alpha Beta Fused cast Alumina Block is formed by the compact structure of alpha alumina and beta alumina crystals in a most ideal proportion which is approximately 50% and 50% respectively,where intertwined crystals of both materials result in a very dense structure.It has dense structure and no contamination to glass. It is the ideal refractory materials for channels, spouts and working ends of floating glass furnace.
Specifications and applications
--Below 1350 ℃, it has excellent corrosion resistance against molten glass and great performance against contamination to molten glass, thus it is very suitable for paving blocks and fore-hearth channel blocks.
--When in contact with molten glass, it barely produces any blistering or stones. So, alpha-beta alumina blocks may be widely used in working tank, feeder channels, superstructures and lipstone, etc.
--In general, in soda-lime container furnaces alpha-beta alumina fused-cast is installed in the Alcove and channel areas, as alternative to AZS fused-cast for Alcoves and as alternative to AZS fused-cast, zirmul, sinter-alumina and other sinter refractories for channels.
--In the float furnaces fused-cast alpha-beta alumina is widely installed in the glass contact (sidewall and pavers) from the waist through the refining area up to spout and lip included.
Technical Data
| Item | FUSED CAST ALUMINA | |
| a-b Alumina TY-M | ||
| Chemical Composition % | Al2O3 | 94 |
| SiO2 | 1 | |
| NaO2 | 4 | |
| Other oxides | 1 | |
| Crystallographic Analysis % | a-Al2O3 | 44 |
| b-Al2O3 | 55 | |
| Vitreous Phase | 1 | |
