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Personne àcontacter Kyla
Zhengzhou, Henan
High alumina refractory bricks are
made from bauxite or kaolinitic clays. The definition of
high-alumina refractory bricks contains between *8 and *9 percent
alumina. They are much harder than the same grade of fireclay
refractories at high temperatures and in basic environments. In
addition, high alumina refractory bricks exhibit better volume
stability and abrasion resistance. High alumina bricks are
generally used in blast furnaces, blast-furnace stoves,
liquid-steel ladles, etc.
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 The high alumina bricks are
classified into three grades as per the amount of
Al2O3they
contain. These areÂÂ
Grade I
Al2O3 content
in the range of *5~*1%
Grade II
Al2O3 content
in the range of *0~*5%
Grade III
Al2O3 content
in the range of *8~*0%
Top Grade
Al2O3 content
in the range of *2~*9%
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Properties of High Alumina
Bricks
High alumina bricks are advanced
refractory materials with very high refractoriness up to
********0°C, much higher than fire clay and semi-silica
bricks.
"High alumina bricks are very
durable. They are also well-designed for use in high-temperature
areas like blast furnaces.
High alumina bricks usually have
higher refractoriness and lower
impurities.
These bricks have a higher
Al2O3 content
than han other bricks in the same category. Therefore, they are
also called neutral refractory materials resistance to both acidic
and basic-slag erosion.
Break up the fifth sentence:
"Along with Al2O3,
these bricks also contain SiO2,
which enhances their resistance to acidic slag erosion even
more.
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Characteristic as
follows:
 Refractoriness; the
refractoriness of high alumina bricks is higher than thats of clay
and semi-silica brick refractoriness up to
***0~***0„ƒ,
belonging to high-grade refractory.
 b, load softening
temperature; high aluminum products because of high
Al2O3,
less impurities, less fusible vitreous formed, so load softening
temperature is higher than the clay brick, but not formed mullite
crystalline, so load softening temperature silica brick is still
not high.
 c, slag resistance;
Al2O3 in
alumina bricks are closer to neutral refractories, resistant to
erosion of acid or alkaline slag, because it contains
SiO2,
so resistance to alkaline slag ratio of acid slag ability is
weaker.
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Application of High Alumina
Refractory Bricks
The high alumina brick is used
mainly in masonry in a blast furnace, hot blast furnace, electric
furnace roof, blast furnace, reflecting furnace, and lining of
rotary kilns. In addition, high alumina brick is used widely in
open hearth furnace lattice brick, plugs used in casting systems,
nozzle brick, etc. But the price of high alumina brick is higher
than the clay brick, so we do not need high alumina brick when the
clay brick can satisfy the demand.
| Pays: | China |
| N ° de modèle: | - |
| Prix FOB: | Obtenir le dernier prix |
| Localité: | - |
| Prix de commande minimale: | - |
| Commande minimale: | - |
| Packaging Detail: | - |
| Heure de livraison: | - |
| Capacité de Fournir: | - |
| Payment Type: | - |
| Groupe de produits : | - |
