Henan specializes in the production of high alumina bricks and refractory bricks with a large amount of integrity services

suggested retail price	?? 800 00
fire resistance temperature	1580 ~ 1770 ℃ (℃)
Origin	Xinmi City, Zhengzhou, Henan
Product category	refractory bricks
Material	others
thermal conductivity (normal temperature)	others

Characteristics of high alumina refractory bricks:
Aluminum silicate refractory products with aluminum oxide (Al2O3) content higher than 48%

According to the Al2O3 content in high alumina bricks, it is usually divided into three grades:
Class I - Al2O3 content> 75%; Class II - Al2O3 content is 60 ~ 75%; Class III - the content of Al2O3 is 48 ~ 60%

Features: 1 Good thermal stability;
2
High fire resistance and load softening temperature;
3
It is divided into standard shaped, ordinary shaped, shaped and special shaped bricks

Purpose of high alumina brick:
It is mainly used for building ceramic frit kilns, bubble alkali kilns, glass kilns, blast furnaces, hot blast furnaces, electric furnace roofs, blast furnaces, reverberatory furnaces, and rotary kilns
Lining
In addition, high alumina bricks are also widely used as open hearth regenerative lattice bricks, plugs for gating systems, nozzle bricks, etc

project indicators		LZ-75	LZ-65	LZ-55
alumina content	%	75	65	55
apparent porosity	%	23	23	22
normal temperature compressive strength	Mpa	50	45	40
0 2mpa load softening start temperature	℃	1520	1500	1450
permanent line change of heating%	1500℃ 2h	0 1-0 4
	1450℃ 2h	0

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