宝珠砂
Ceramsite Sand
Size:#200-#1500AFS15-AFS170
Main Chemical Composition:
Al2O3:70-85%
SiO2:5%-20%
Fe2O3:5%max
TiO2 :5%max
Physical Properties:
Shape:ball, spherical
Angularity: 1.1 max, similar to ball
Bulk Density:1.95-2.05(g/cm3)
Refractoriness: 1790 C min
Thermal expansion: 0.13% (10 min at 1000 C )
Application:
Waterglass bonded sand, resin bonded sand, precision casting, Expendable Pattern Casting (EPC), Copper and Aluminium articles casting treatment.
Advantages:1,replacement of Quartz Sands and Silica Sands2,Low thermal expansion rate3,high refractoriness
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