Al2O3 Refractory Mortar, Shape : Power

Model
Type GDL-1 GDL-2 GDL-3 GDL-4
Chemical composition (%) SiO2� 96 96 96 96
Al2O3� 0.7 0.6 0.6 0.5
Fe2O3� 0.55 0.55 0.5 0.5
Cold crushing strength (Mpa) 1250��3h
After firing at 15 15 10 10
Ａpparent porosity (�)
1250��3h
After firing at 24.5 24.5 25 23
Linear changing after burnt (%) 1250��3h
After firing at 0�+1.6 0�+1.2
Bulk density �gcm3� 1250��3h
After firing at 2.2 2.2 2.2 2.2
Refractoriness (�) 1620 1630 1650 1650
Max. grain size of aggregate (mm) 6.5 6.5 6.5 6.2
Amount for construction (kgm3) 2250 2250 2250 2250
Mathod of construction Jolt or ramming
Application Melting furance for nonferrous metals
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