Description
Features
Fire clay brick is weakly acidic refractories. It has high density, high strength under normal & high temperature, good thermal shock resistance.
Application
Fire clay brick is widely used to build hot air stove, coke oven, electric arc furnace, boiler, carbon baking furnace, etc.
Parameter
| Item | N-1 | N-2a | N-2b | N-3a | N-3b | N-4 | N-5 | N-6 | |
|---|---|---|---|---|---|---|---|---|---|
| Refractoriness | ℃ | 1750 | 1730 | 1730 | 1710 | 1710 | 1690 | 1670 | 1580 |
| Permanent linear change, % | 1450℃×2h | +0.1 -0.4 | +0.1 -0.5 | +0.2 -0.5 | |||||
| Permanent linear change, % | 1350℃×2h | +0.2 -0.5 | +0.2 -0.5 | +0.2 -0.5 | +0.2 -0.5 | +0.2 -0.5 |
|||
| Apparent porosity, % | ≤ | 22 | 24 | 26 | 24 | 26 | 24 | 26 | 28 |
| Cold crushing strength, MPa | ≥ | 300 | 250 | 200 | 200 | 150 | 200 | 150 | 150 |
