Zhengzhou Annec Industrial Co., Ltd. |
Verified Suppliers
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Item | Corundum Mullite Bricks |
Al2O3 (%) | ≥78 |
SiO2 (%) | ≤20 |
Fe2O3 (%) | <0.5 |
Bulk Density, (g/cm3) | ≥2.7 |
Apparent Porosity,(%) | ≤20 |
Cold Crushing Strength (Mpa) | ≥70 |
Refractoriess under load (0.2MPa,0.6%)℃ | ≥1650 |
Long Term Service Temperature (℃) | 1650 |
Reheating Linear Changer | (1600℃X3h) ±0.3 |
Load softening temperature
Since the high aluminum has a high Al2O3 content, a low impurity
content, and a low formation of the molten glass body, the
fire-resistant softening temperature is higher than that of the
refractory clay brick. However, since the mullite crystal has not
yet formed a network structure, the load softening temperature is
lower than the load softening temperature of the silica brick.
Advantage:
1.High load softening start temperature
2.Very good chemical stability
3. strong resistance to acidic or alkaline slag
Mainly used in iron-making blast furnaces and blast furnace hot-blast furnaces, refining furnaces outside steel-making furnaces, sliding water heaters, glass melting furnaces, and petrochemical industrial furnaces
Used in the iron and steel industry, the service life
of chromium corundum material is more than double that of corundum
material, such as ladle breathable bricks, etc.; used in the
non-ferrous smelting industry, the wear resistance and erosion
resistance of corundum bricks are significantly better than other
brick types; In the black industry, using corundum bricks doubles
the life span of corundum bricks used under the same conditions.
The AK-type chromium corundum brick produced is used in the carbon
black reactor of the carbon black factory, and the service life has
exceeded the corundum brick.
In the petrochemical industry, due to long-term high
temperature (1350 ~ 1450 ℃), high pressure (3.1 ~8.53 MPa), strong
reducing atmosphere (CO + H2 + CH4) and gas flow velocity in the
gasifier of large and medium fertilizer plants Large (about 10
m·s-1), the corrosion and damage to the furnace lining refractories
are serious, so the requirements for the furnace lining
refractories are higher. High-performance corundum bricks have high
density and strength, and are more resistant to air flow and wear
resistance than corundum bricks. The introduction of Cr2O3 into the
corundum bricks changes the internal quality of the products, and
significantly improves the resistance to slag erosion and
permeability of the bricks. The use of corundum bricks in the
gasifier can increase the service life of the gasifier
Packaging and shipping
Standard packing: waterproof inner packing + outer packing suitable for container transportation