Tall aluminous brick is long high use temperature

Tall aluminous brick regards us as a kind of firebrick that in kiln furnace middling of fireproof material application uses, its function is not being disconnected to send. Now, let us use temperature to serve as jumping-off place from the length of tall aluminous brick, will understand the characteristic of tall aluminous brick and application.
Tall aluminous brick is to point to Al2O3 content to pledge in the siliceous aluminium of 48% above neuter and fireproof material, by alumina or other alumina content taller raw material classics shapes to be become with to calcine. Thermal stability is tall, fireproof degree in 1770 ℃ above. The sex that fight broken bits is better, the liner that is used at build by laying bricks or stones to build furnace of circumgyrate of forge of steel-making electric stove, glass, cement to wait. It is a scope of application of current our country is relatively wide kind of fireproof product, at the same time it also holds very large proportion in firebrick market.


Our country is its cent 4 kinds normally according to national relative standard:
Special grade: Al2O3 content ≥ 85% ; First-class: Al2O3 content ≥ 75% ; Second-class: Al2O3 content 60%~75% ; Third class: 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 tall aluminous brick to change target:


Change index to pursue according to the manage of tall aluminous brick, we can see 4 sort tall aluminous brick is long high use temperature is between 1600-1700 ℃ .
Because the function of tall aluminous firebrick is,increase along with the addition of Al2O3 content, the Al2O3 content that so we can raise tall aluminous brick appropriately will increase its fireproof performance. But, the cost of firebrick also is raising ceaselessly.
Tall aluminous brick has the following advantage:
1, fireproof degree
Of firebrick fireproof degree taller, high-energy bear quite 1790 ℃ 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 Al2O3 is contained in chemical composition, chemistry is accordingly stable, can better keep out kiln slag to erode.
Brick of mouth of the head of a place of strategic importance that tall aluminous brick is used to do checker brick of type of open-hearth furnace accumulation of heat, gating system to use widely, water. But the cost of tall aluminous brick is higher, so, in the place that can use argillaceous brick to be able to resolve kiln furnace demand we to save cost OK and first consideration uses argillaceous brick.