Specifications

High alumina Refractory brick
Refractory brick for kiln liner
Corundum Refractory Brick

Refractory Brick:

Refractory brick are manufactured by adding materials with expansion different from that of bauxite to the high alumina bricks and based on the principle of multiphase increasig toughness,tiny cracks are generated in its constitutionalstructure,which improve the thermal shock resistance of the products.The bricks are characterized by high resistance to spalling and good refractoriness underload and are used in the transition zone,decomposition zne of medium and small cement rotary kiln.

Al2O3 (%)	≥60	≥70	≥75	78-80
SIO2 (%)	32	22	20	≥18
Fe2O3 (%)	≤1.7	≤2.0	≤1.8	≤1.8
Na2O+K2O(%)	<2.3	<2.0	<1.2
Refractoriness	1790	>1770	>1790	≥1790
refractoriness under load 0.2mpa(°C)	1450	>1510	>1520	≥1520
Porosity (%)	22	<22	<21	20
Bulk density(g/cm3)	2.33	2.43-2.48	2.45-2.55	2.55
Cold Cushing strength (Mpa)	≥45	≥50	≥54	≥60
Thermal expansion at 1000°C (%)	≤0.3	≤0.3	≤0.3	≤0.3
Reheating shrinking change(%) 1500°CX24h	-0.3	-0.3	-0.3	-0.3