Magnesia-Alumina-spinel Brick

It has higher temperature strength,good thermal shock stability,strong resistance to basic slag.

Normal magnesia brick is mgde of Alumina Magnesia spinel,periclase.It has higher temperature strength,good thermal shock stability,strong resistance to basic slag.

Magnesia-Alumina spinel brick is made of Alumina-magnisia spinel,fused magnesia clinker and high purity magnesia clinker at high-pressure,sintered at temperature over 1700.It has the advantage of excellent qbrasive-resistance strength,good resistance to reducing at mospheres and free CO2,SO2,SO3,K2O,NA2O.It is mainly used in lining of lime rotary kiln of steel mill ,the top pf furnace.

 

Brand of name                       Index	Normal Magnesia-Alumina-spienl Brick		Magnesia-Alumina-spienl Brick
	ML-80A	ML-80B	MLJ-75	MLJ-70
MgO      %	≥80	≥80	≥75	≥70
Al2O3       %	5-10	8-12	8-15	8-15
SiO2         %	≤1.8	≤1.0
Bulk Density g/cm3	≥2.95	≥2.95	≥2.95	≥2.95
Apparent Porosity %	≤18	≤18	≤18	≤18
Cold Crushing Strength Mpa	≥60	≥60	≥50	≥50
Refractoriness Under Load T0.6()	≥1700	≥1700	≥1700	≥1700
Thermal Shock Resistances 1100  water cycles	≥10	≥15	1500x3h 0∼+0.2	≥20
			≥15

Magnesia-Alumina-spinel Brick