clay bicks used in blast furnace
Items Index
ZGN-42 GN-42
Al2O3 ≥42 42
Fe2O3 ≤1.6 1.7
Refractoriness ≥1750 1750
refractoriness under load of 0.2MPa ≥1450 1430
1450,3h 0 0
-0.2 -0.3
Apparent porosity ≤15 16
Cold crushing strength /MPa ≥58.8 49.0
37 holes clay bricks