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Product category|Fire Clay Brick
AI2O3: 33%-48%
Bulk Density: 1.9g/cm3-2.3g/cm3
Refractoriness: ≥1690℃
Cold Crushing Strength: ≥20MPa
Grade:SK-30/SK-32/SK-34/SK-35
Standard Size: 230*114*65mm/230*114*75mm/Customized
Online Time: 7*24 hours
Fire clay brick is a common type of refractory brick, and its AL203 content is about 30%-48%. Fire clay bricks are made of refractory clay or kaolin and clay clinker combined with clay, formed by a semi-dry method or a plastic method, and baked at a temperature of 1250-1420°C. The refractoriness of clay bricks is generally 1580℃-1750℃, and the load softening temperature is 1250C-1450℃.
High strength
High refractoriness
Low porosity, high density
High mechanical strength
Good thermal shock stability
The insulating lining of hot surfaces or backing heat-insulating layers of other refractory materials. The refractory linings or heat-insulating materials of the industries, such as, ethylene pyrolysis furnaces, tubular furnaces, reforming furnaces of synthetic ammonia, gas generators and high-temperature shullte kilns,etc.
| SK series | SK30 | SK32 | SK34 | SK35 |
| Al203 | 30%-35% | 35%-38% | 38%-42% | 42%-50% |
| ltem | 33%Al203 fire clay brick | 38%Al203 fire clay brick | 42%Al203 fire clay brick | 48%Al203 fire clay brick |
| Al203 | 33% | 38% | 42% | 48% |
| Fe2O3/% | ≤3 | ≤3 | ≤3 | ≤2.5 |
| Refractoriness | ≥1690℃ | ≥1730℃ | ≥1750℃ | ≥1750 ℃ |
| Bulk density/g/cm3 | 1.9-2.0 | 2.0-2.1 | 2.1-2.18 | 2.15-2.3 |
| Unit weight (230*114*65mm) | ≥3.35KGS | ≥3.55KGS | ≥3.65KGS | ≥3.75KGS |
| Apparent porosity/% | ≤26 | ≤24 | ≤24 | ≤22 |
| Cold crushing strength | ≥20Mpa | ≥25Mpa | ≥30Mpa | ≥35Mpa |
| Refractoriness under load | ≥1250°℃ | ≥1300 ℃ | ≥1350 ℃ | ≥1420 ℃ |
| Reheating Linear Change/% | 0~-0.5 (1350°C,2h) | 0~-0.3 (1350°C,2h) | 0~-0.4 (1450°C,2h) | +0.1~-0.4 (1450°C,2h) |
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