1.high free opening rate
2.heavy specific gravity
3.high flow rate
4.good fluidity
5.proper sintering layer thichness
Detailed introduction to refractory silica sand:
chemical Index(%)
SiO2 25.0-35.0
Al2O3 ≤5.0
CaO ≤5.6
Fe2O3 2.0-8.5
MgO 53-60
H2O ≤0.5
Hemisphere point(°C) ≥1700
Bulk density ≥1.3g/cm3
Granularity(mm) 2-5
Applicable:
Electric strove
Package and weight may be changed according to customer’s demand