|
Item
|
Fused Mullite
|
?α-β Alumina
|
|
Chemical Composition (%)
?
|
Al2O3
|
73.5
|
94
|
|
ZrO2
|
8
|
-
|
|
Na2O
|
1.0
|
3.5
|
|
SiO2
|
18.5
|
1.5
|
|
Fe2O3
|
1.5
|
|
CaO
|
|
TiO2
|
|
Apparent Porosity (%)
|
8
|
--
|
|
True specific gravity (g/cm3)
|
3.54
|
3.5
|
|
Cold Crushing Strength (Mpa)
|
350
|
200
|
|
Thermal Expansion at 1150 ℃ (%)
|
0.8
|
0.9
|
|
Thermal conductivity at 500-1500 ℃? (W/MK)
|
4.6
|
--
|
|
Static corrosion 1350℃*48h
|
--
|
0.3mm/24h
|
|
Bulk density WS (g/cm3)
|
3.4
|
3.4
|
|
Crystallographic analysis (%)
?
|
Corundum
|
38
|
45
|
|
Mullite
|
40
|
-
|
|
Vitreous Phase
|
15
|
2
|
|
Baddeleyite
|
5
|
-
|
|
β Alumina
|
-
|
53
|
PRODUCT>REFRACTORY BRICK