Piece weight
chemical composition
SiO2/% ≥
Fe2O3/% ≤
melt index /% ≤
0.2MPa refractoriness under load /℃ ≥
apparent porosity /% ≤
Compressive strength at normal temperature /MPa ≥
true density /(g/cm3) ≤
Reheating linear change(1450℃,2h)/%≤ |
≤15kg
96
0.9
0.5
1680
22
35
2.34
0.3 |
15~25kg
96
0.9
0.5
1680
23
30
2.34
0.3 |
25~40kg
96
1.0
0.6
1670
24
30
2.35
0.3 |