Fire Resistant High Alumina Refractory Bricks / Insulation Firebrick SK34 SK36 SK38 SK40 for Fireplace furnace
High Alumina Refractory Bricks / Insulation Firebrick SK34 SK36 SK38 SK40
Laurel produces a comprehensive range of Fire clay brick consisting of 30-55% Alumina all of which exhibit excellent strength. For more arduous environments we offer a hand fired "super duty" Fire clay brick with a very high mechanical strength.
Typically our firebrick range is based upon flint clay giving it both a low iron and low alkali characteristic. Resistance to thermal shock, abrasion, chemical attack and reducing atmospheres are just some of the key criteria determining choice of product within each application. a wide range of sizes are held in stock.
| Item | SK-30 | SK-32 | SK-34 | SK-36 | SK-38 |
| AL2O3 % (min) | 30-35% | 35-38% | 38-42% | 50-55% | 60-65% |
| Fe2O3% (max) | 3 | 3 | 2.8 | 2.5 | 2.3 |
| Refractoriness | ≥1670°C | ≥1690°C | ≥1710°C | ≥1750°C | ≥1770°C |
| Refractoriness under load, 0.2MPa, (°C) | ≥1270 | ≥1350 | ≥1350 | ≥1430 | ≥1450 |
| Apparent porosity (%) | 20-24 | 20-24 | 19-23 | 18-22 | 18-22 |
| Bulk density (g/cm³) | 2.00-2.05 | 2.05-2.1 | 2.1-2.15 | 2.15-2.25 | 2.25-2.35 |
| Cold crushing strength (MPa) | ≥25 | ≥30 | ≥35 | ≥45 | ≥50 |
| Thermal expansion at 1000°C (%) | ≤0.6 | ≤0.55 | ≤0.55 | ≤0.4 | ≤0.4 |
1.High mechanical strength
2.Good thermal shock resistance
3.Good resistance to abrasion and corrosion
4.Good volume stability at high temperature
Application :
- Iron & steel making:Blast furnace,hot blast stove,hot metal ladle,tundish,soaking pit,heat treatment furnace,refining furnace,reheating furnace,metal mixter furnace,cupola furnace.
- Non-ferrous Metal:Smelting furnace,reverberatory furnace.
- Building materials:Cement kiln,glass kiln,ceramic kiln,lime kins,kiln car,tunnel kiln,rotary kiln.
- Energy &Incineration:Coke oven,boiler,power generation boiler,CFB boiler,electric furnace,carbon roasting furnace,waste incinerators.
- Others:Petrochemical industry furnace,pizza oven.
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