| Fused mullite
main parameter |
Properties |
elct.melt.3Al2O3.2SiO2 |
Chemical Composition(%) |
Al2O3 |
70-77 |
SiO2 |
22-29 |
Fe2O3 |
<0.1 |
R2O |
<0.5 |
RO |
<0.3 |
Refractoriness(¡æ) |
>1850 |
Particle bulk
density(g/cm3) |
>3.03 |
Linear expansion
coefficient |
-6.0¡Á10-6/¡æ |
Glass phase
content(%) |
¡Ü5-6% |
3Al2O3.2SiO2Phase |
¡Ý94-95% |
| Spinel grogs and Al2O3-spinel
solid melt grogs with Al2O3
content of 70% and 90% respectively are produced in an electric
by PYF and they can be processed into the grains the fine powders
and the micro powders with different particle sizes. |
Properties |
AM-70 |
AM-90 |
Chemical
Composition(%) |
Al2O3 |
69-76 |
88-91 |
MgO |
22-27 |
8-9 |
CaO |
¡Ü0.65 |
¡Ü0.4 |
SiO2 |
¡Ü0.3 |
¡Ü0.25 |
Fe2O3 |
¡Ü0.5 |
¡Ü0.5 |
Grain
size(mm) |
3-5 |
3-5 |
1-3 |
1-3 |
0-1 |
0-1 |
Fine
powder(mesh) |
80,100,240,320,etc |
80,100,240,320,etc |
Micro
powder(um) |
3-5,5-10 |
3-5,5-10 |
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