Mullite
Mullite is an excellent refractory raw material. It has the characteristics of uniform expansion, good thermal shock stability, high load softening point, small high-temperature creep value, high hardness, and good resistance to chemical corrosion. Currently, it mainly has high-purity Fused...
Mullite is an excellent refractory raw material. It has the characteristics of uniform expansion, good thermal shock stability, high load softening point, small high-temperature creep value, high hardness, and good resistance to chemical corrosion. Currently, it mainly has high-purity Fused mullite, ordinary fused mullite, all-natural bauxite concentrate sintered mullite and light burnt mullite.
Specific physical and chemical indicators
|
project
|
High purity fused mullite
|
Ordinary fused mullite
|
All natural sintered mullite
|
Lightly burnt mullite
|
|
Al2O3 * _ _ _
|
72.6
|
71.7
|
74.1
|
68.2
|
|
SiO2 * _
|
25.6
|
22.0
|
26.2
|
25.3
|
|
Fe2O3 * _ _ _
|
0.01
|
0.65
|
0.81
|
0.95
|
|
TiO2 * _
|
0.01
|
2.81
|
2.05
|
2.13
|
|
CaO*
|
0.17
|
0.15
|
0.28
|
2.30
|
|
MgO*
|
0.08
|
0.20
|
0.25
|
0.29
|
|
K2O*
|
0.01
|
0.19
|
0.21
|
0.25
|
|
Na2O*
|
0.19
|
0.05
|
0.15
|
0.13
|
|
Body density g/cm 3
|
3.02
|
2.84
|
2.86
|
2.75
|
|
Apparent porosity
|
2.1
|
9.4
|
5
|
10
|
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