Common Clay Brick
MARSREF is a supplier of SK30/SK32/SK34/SK35 clay bricks, which have an alumina content of less than 48% and are fired at a high temperature of 1300-1400°C. Since clay bricks are weakly acidic refractory products, they can resist the erosion of acidic slag and acidic gas, but have a slightly poorer resistance to alkaline substances.
Because clay bricks are common refractory materials, they are widely used. They are mainly used in steel industry such as heating furnaces, continuous annealing furnaces, kiln cars, ladle covers, etc. As well as various high-temperature industrial kilns such as annealing furnaces, normalizing furnaces, tempering furnaces, and soaking furnaces.
Welcome to inquiry us about fire clay bricks price, size, technical data, and anything you want to know.
Performance Characters:
Good resistance to corrosion and abrasion.
Perfect thermal shock resistance.
Good spalling resistance.
High mechanical strength.
Good volume stability under high temperature.
Item/Grade | SK30 | SK32 | SK34 | SK35 |
Al2O3 % | ≥30 | ≥35 | ≥38 | ≥45 |
Fe2O3 % | ≤2.5 | ≤2.5 | ≤2.0 | ≤2.0 |
Refractoriness； SK | 30 | 32 | 34 | 35 |
Apparent porosity； % | 22-26 | 20-24 | 20-22 | 18-20 |
Bulk density； g/cm3 | 1.9-2.0 | 1.95-2.1 | 2.1-2.2 | 2.15-2.22 |
cold crushing strength； Mpa | ≥20 | ≥25 | ≥30 | ≥40 |
Refractoriness under load, ℃ 0.2MPa, | ≥1400 | ≥1350 | ≥1320 | ≥1300 |
