Molten Copper Induction Furnace Refractory Castable

Model
Material Corundum, Alumina
Type SZ-1 SZ-2
Chemical Composition (%) Al2O3 65 60
SiO2 30 32
SiC 2 5
CaO 2 3
Cold crushing
Strength (Mpa) 110��24h
After drying at 35 40
500��3h
After firing at 40 45
Cold bending strength(MPa) 110��24h
After drying at 12 10
500��3h
After firing at 16 18
Linear changing
after burnt(%) 500��3h
After firing at ±0.8
Bulk density�gcm3� 500��3h
After firing at 2.9 2.8
Amount for construction�kgcm3� 3000 2900
Additional water (%) 6-8 6-8
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