we can supply all kinds of refractory bricks,such as SK30,SK32.....
ITEM | NL13 | SK-30N3 | SK32 | SK-34N1 | NZ42 | |
Refractoriness(SK)
| ≥32 ≥1710 | ≥31 ≥1690 | ≥32 ≥1710 | ≥34 ≥1750 | ≥34 ≥1750 | |
Bulk Density g/cm3 | ≥2.3 | ≥1.9 | ≥1.9 | ≥2.0 | ≥2.26 | |
Apparent porosity % | ≤13 | ≤26 | ≤26 | ≤24 | ≤20 | |
Cold Crushing Strength MPa | ≥49 | ≥19.6 | ≥19.6 | ≥19.6 | ≥40 | |
Lingar Expasion % at1000 |
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Rate of lingar Change % at *2hrs |
| -0.5~+0.5 1350 | -0.5~+0.5 1350 | -0.5~+0.5 1400 | ≤0.2 1350 | |
Soften Yield Point Under Load (T2) at 0.2MPa | ≥1450 |
| ≥1350 | ≥1350 | ≥1400 | |
Chemical Analysis % | SiO2 |
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Al2O3 | ≥38 | ≥39 |
| ≥40 | ≥42 | |
Fe2O3 | ≤2 | ≤1.7 |
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ITEM | SK35(H3) | SK36 | SK37(H2) | SK38(H1) | LZ80 | |
Refractoriness(SK)
| ≥35 ≥1770 | ≥36 ≥1790 | ≥37 ≥1825 | ≥38 ≥1850 | ≥37 ≥1790 | |
Bulk Density g/cm3 | ≥2.1 | ≥2.2 | ≥2.2 | ≥2.3 | ≥2.8 | |
Apparent porosity % | ≤27 | ≤27 | ≤27 | ≤27 | ≤22 | |
Cold Crushing Strength MPa | ≥24.5 | ≥29.4 | ≥29.4 | ≥29.4 | ≥50 | |
Lingar Expasion % at1000 |
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Rate of lingar Change % at *2hrs | -0.6~+0.2 1500 | --0.6~+0.2 1500 | -0.6~+0.2 1500 | --0.6~+0.3 1500 | ≤0.7 1400 | |
Soften Yield Point Under Load (T2) at 0.2MPa |
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Chemical Analysis % | SiO2 |
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Al2O3 | ≥50 | ≥52 | ≥60 | ≥70 | ≥80 | |
Fe2O3 |
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