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Fused cast refractories
Fused cast refractories
Alumina fused cast refractories
Temperature - Thermal expansion
Temperature - Thermal conductivity
Temperature - Electrical resistivity
Chemical composition(%)
MB-G
MB-U
MB-A
SiO
2
0.8
0.2
0.3
Al
2
O
3
95
93
98.5
Fe
2
0
3
tr
tr
tr
TiO
2
tr
tr
tr
ZrO
2
0.3
tr
0.4
Na
2
O
3.5
6.5
0.3
Mineral composition(%)
MB-G
MB-U
MB-A
α -alumina
44
0
>94
ß -alumina
55
>99
5
Glass phase
1
>1
<1
Physical properties
MB-G
MB-U
MB-A
True specific gravity
3.54
3.26
3.90
Compressive strength(MPa)
200
30
250
Bulk density
RC
3.20
2.80
3.50
VF
3.40
3.00
3.70
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Alumina fused cast refractories
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