High aluminate brick is made of high alumina bauxite with high quality,it has the advantage of high refractoriness under load,high refractoriness,also can resist erosion and so on.

 

Usage:high aluminate brick is mainly used for building blast furnace,hot blast stove,roof of electric furnace, reflecting furnace,liner of rotary kiln,also widely used for checker brick of open hearth regenerator,stopper of sunner system,nozzle bricks and so on.

Specification for the high alumina brick:

Items	DL-80	DL-75	MTD-A	MTD-B	STD-80
Al2O3 % ≥	80	75	65	75	80
Refractoriness °C ≥	1790	1790	1790	1790	1790
0.2Mpa refractoriness under load °C ≥	1550	1530	1630	1580	1560
Heating linear change %(1500°C*2h)	0~-0.3	0~-0.4	0~-0.3	0~-0.4	0~-0.3
Apparent porosity % ≤	19	19	19	20	20
Cold compressive strength Mpa ≥	78.5	68.5	70	65	70
Thermal shock resistance(1100°C,water cooling) ≤	-	-	30	25	20