China Clay Brick for Boilers Steel Mills Coking Glass Furnace Tunnel Lime Kiln Brick Fireclay Brick, Find details about China Refractories, Kiln Brick from Clay Brick for Boilers Steel Mills Coking Glass Furnace Tunnel Lime Kiln Brick Fireclay Brick
Items | Fireclay brick | High alumina brick | ||||||
SK30 | SK32 | SK34 | SK35 | SK36 | SK37 | SK38 | SK40 | |
Al2O3,% ≥ | 30 | 32 | 38 | 45 | 55 | 65 | 70 | 82 |
Fe2O3,%≤ | 2.5 | 2.5 | 2 | 2 | 2 | 2 | 2 | 2 |
Refractoriness,SK | 30 | 32 | 34 | 35 | 36 | 37 | 38 | 40 |
Refractoriness,ºC | 1670 | 1710 | 1750 | 1770 | 1790 | 1820 | 1850 | 1920 |
Refractiriness under load,0.2Mpa | 1250 | 1350 | 1370 | 1420 | 1450 | 1480 | 1530 | 1600 |
Apparent porosity,% ≤ | 22-26 | 20-24 | 20-22 | 18-20 | 20-23 | 20-23 | 20-22 | 18-20 |
Bulk density,g/cm3 | 1.9-2.0 | 1.95-2.1 | 2.1-2.2 | 2.15-2.22 | 2.25-2.4 | 2.3-2.5 | 2.4-2.6 | 2.5-2.7 |
Cold crushing strength,Mpa ≥ | 20 | 25 | 30 | 40 | 45 | 50 | 60 | 70 |