With fused corundum as main material, adding with special additives, adopting exceptive technique to realize micropore.
With fused corundum as main material, adding with special additives, adopting exceptive technique to realize micropore, product is endowed with excellent properties which are up to or surpass those of the imported products of the same kind, some of them such as alkali resistance, slag resistance and micropore ratio are better than those of imported brown corundum block for ceramic cup. The micropore corundum brick is suitable for large blast furnace ceramic cup, blast tuyere, iron notch and slag notch.
Index Item | WGZ—1 | WGZ—2 |
Al2O3,% | ≥80 | ≥85 |
Fe2O3,% | ≤1.0 | ≤0.8 |
BD,g/cm3 | ≥3.10 | ≥3.20 |
AP, % | ≤16 | ≤14 |
CCS, MPa | ≥140 | ≥160 |
Permeablility,mDa | ≤1.0 | ≤0.5 |
Corrosion index to hot metal,% | ≤1.5 | ≤1.0 |
Corrosion resistance to slag,% | ≤8 | ≤6 |
Average pore size, μm | ≤0.5 | ≤0.3 |
<1μm Pore volume,% | ≥70 | ≥75 |
TC(600°C),W/m.K | ≤5 | 5≤ |
Corrosion resistance to alkaline | Excellent, no cracks | Excellent, no cracks |
