Heavy Corundum Alumina Refractory Brick

1. Strong glass corrosion resistance 2. High thermal shock stability. 3. Good wear-resistance.

Feature:

1. Strong glass corrosion resistance and high thermal shock stability.

2. Good wear-resistance, dregs-resistance and alkali corrosion resistance.

3. Adopting superior material, casted by fusing technology, barely no pollution.

Applications:

1. High temperature industrial furnace such as glass furnace, cement kiln, heaters molten steel ladle

2. Metallurgical furnaces for nonferrous metals and furnaces for chemical engineering industries.

Physical and chemical index:

Item	Properties
	High-purity corundum bricks DL-98	Ordinary corundum bricks DL-95	Ordinary corundum bricks DL-90	Mullite corundum bricks MDL-80	Chromium corundum bricks GDL-85
Al2O3%	98.5	95	90	80	85
Cr2O3%					8
SiO2%	0.3	3.0	9.0	18	0.2
Fe2O3%	0.2	0.2	0.5	0.5	0.2
R2O%	0.3	0.6	0.6	0.4	0.5
Bulk density,g/cm3	3.0	2.9	2.9	2.7	3.1
Cold Crushing strength MPa	75	100	100	60	80
Refractoriness,°C	1790	1790	1790	1790	1790
Softening temperature under load,°C,	1700	1650	1650	1700	1700
Refiring line changes(%),1600°C×3h≤	0.2	0.2	0.2	0.3	0.2
Application	High temperature industrial furnace

Heavy Corundum Alumina Refractory Brick