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Fused Casting Zirconia Corundum (AZS) bricks for glass furnace
Fused Casting Zirconia Corundum (AZS) bricks for glass furnace
1.Definition:
It is mainly made of the baddeleyite and corundum material.
2.Raw material: corundum and baddeleyite eutecticum
3.Product technology:Casting technology.
4.Production process:
Made of the zirconite (Industry zirconia ) and industry alumina as the mainly mixed raw material, melting in the electric furnace, casting, annealing, machining, then finished.
5.Highlight:1). Fine thermal conductivity in the normal temperature.
2).Compact structure
3).Strong resistant erosion stability to the glass liquid.
4).Not color to the glass.
6.Properties:
chemical composition | AZS-33 | AZS-36 | AZS-41 |
ZrO2 | ≥33 | ≥35 | ≥40 |
SiO2 | ≤16.0 | ≤14 | ≤13.0 |
Al2O3 | a little | a little | a little |
Na2O | ≤1.5 | ≤1.6 | ≤1.3 |
Fe2O3+TiO2 | ≤0.3 | ≤0.3 | ≤0.3 |
Physical Properties
bulk density(g/cm3): | 3.5-3.6 | 3.75 | 3.90 | |
cold crushing Mpa | 350 | 350 | 350 | |
thermal expansion coefficient (1000°C) | 0.80 | 0.80 | 0.80 | |
exudation temp. of glass phase | 1400 | 1400 | 1400 | |
corrocion resistance of glass melt(mm/24h) | 1.6 | 1.5 | 1.3 | |
Density | PT QX | 3.40 | 3.45 | 3.55 |
WS ZWS | 3.60 | 3.70 | 3.8 | |
phase composition(%)
baddeleyite | 32 | 35 | 40 |
glass phase | 21 | 18 | 17 |
α- corundum | 47 | 47 | 43 |
