Want to understand brick of 3 class tall aluminium, we want to be clear about first, 3 level are a kind when aluminous brick serves as tall aluminous brick high, it is the country undertakes classify according to its chemical composition scale.
Tall aluminous brick is to point to Al2O3 content to pledge in the siliceous aluminium of 48% above fireproof material.
Our country is its cent 4 kinds normally according to national relative standard:
Special grade: Al2O3 content ≥ 85% ;
Ⅰ : Al2O3 content ≥ 75% ;
Ⅱ : Al2O3 content 60%~75% ;
Ⅲ : Al2O3 content 48%~60% .
Of course, we also but according to its mineral composition undertakes classified, general component is: Low Molaishi qualitative, Molaishi Mo Laishi of ― of qualitative, corundum mixes corundum of qualitative, Mo Laishi ― character corundum is qualitative 5 kinds. Its are mineral composition basically is corundum, Molaishi and vitreous photograph.
We will understand manage of brick of 3 class tall aluminium to change target:
From us manage of product of tall aluminous brick is changed can see in index, the loading bate temperature of brick of 3 class tall aluminium is 1420 ℃ .
We had been clear about the loading bate temperature of brick of 3 class tall aluminium, the loading bate temperature of tall aluminous firebrick also is along with the addition of Al2O3 content heighten.
Brick of 3 class tall aluminium has the following advantage:
1, fireproof degree
Of 3 class firebrick fireproof degree taller, can bear 1770 ℃ control temperature.
2, loading bate temperature
In be the same as series product, because content does not consider its Al2O3 tall, loading bate temperature also is in moderate level, compare clay nevertheless the advantage is clear for the brick.
3, the sex that fight broken bits
Because its contain Al2O3 in chemical composition, chemistry is accordingly stable, can better keep out kiln slag to erode.
Brick of 3 class tall aluminium uses brick of mouth of the head of a place of strategic importance that becomes checker brick of type of open-hearth furnace accumulation of heat, gating system to use, water to wait widely. But price of tall aluminous brick should compare 3 level argillaceous brick is tall, reason can satisfy the place of the requirement not to use brick of 3 class tall aluminium with argillaceous brick. Same, the product of tall aluminous brick that can satisfy the place of demand to also need not use more advanced level through brick of 3 class tall aluminium.
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