HCR
Huachen Refractory
α β Corundum Brick
Other name: cast alumina corundum product
Model Number: RA-M
Certification: ISO190001
Minimum Order Quantity: 6/negotiable
White αβcorundum brick
White αβcorundum brick Introduction
αβcorundum brick is produced by melting and casting high alumina in electric furnace under 2000℃, αβcorundum is formed when α-alumina andβ-alumina inter-combing during ther crystallization stage.a very compace structure is then formed.
White αβcorundum brick Features
It has excellent endurance to strong alkali. Under 1350, the corrosion resistance is same as AZS block. Since there nearly don’t have impurities as Fe2O3 and TiO2 , so when contact with glass liquid, air bubble are rarely found, and no pollution to glass liquid.
White αβcorundum brick Physical and Chemical Index
Chemical composition(%) | SiO2 | Al2O3 | Na2O | Fe2O3 + TiO2 | |
RA-M | <0.5 | >95 | 3.2-4.5 | <0.5 | |
Physical Properties | |||||
True Density(g/cm3) | Cold Crush Strength (Mpa) | Thermal Expansion(%) 1000℃ | Thermal Expansion(%) 1500℃ | Porosity(%) | Bulk Density(g/cm3) |
3.54 | >200 | 0.7 | 1.09 | <8 | 3.1-3.4 |
Crystalline Phase (%) | |||||
Glass Phase | αcorundum | βcorundum | |||
<2 | 40-50 | 50-60 | |||
White αβcorundum brick Application
It is very suitable for sidewalls, pond bottoms, pave brick, channel, feeder of glass kiln.
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