Magnesium-alumina spinel brick (MLJ) is the main raw material with high purity magnesium sand and synthetic magnesium-alumina spinel, and the main crystal phase is magnesia and spinel. The high temperature performance of its products, high thermal shock stability and strong slag resistance. It is widely used in the transition zone of cement rotary kiln, the grid of glass kiln, the stable change in the kiln of the kiln and the furnace of refractory material.
Magnesia-Alumina Spinel Brick
|
Brand
|
MLJ-75A
|
MLJ-75B
|
MLJ-80
|
MLJ-85A
|
MLJ-85B
|
MLJ-93A
|
MLJ-93B
|
|
%,≥
Chemical composition
|
MgO≥
|
75
|
75
|
80
|
85
|
82
|
88
|
85
|
|
Al2O3≤
|
5-10
|
5-8
|
9
|
9
|
9
|
5
|
5
|
|
SiO2≤
|
0.6
|
1.0
|
1.5
|
0.6
|
2.5
|
0.6
|
2.0
|
|
%,≤ Apparent porosity
|
17
|
17
|
17
|
16
|
17
|
16
|
17
|
|
g/cm3 Bulk Density
|
2.95
|
3.05
|
2.95
|
2.95
|
2.95
|
2.95
|
2.95
|
|
MPa,≥ Crushing strength
|
45
|
45
|
45
|
45
|
40
|
45
|
40
|
|
℃ ≥ Load softening point
|
1700
|
1700
|
1700
|
1700
|
1700
|
1700
|
1700
|
|
Thermal shock stability 1100 ℃ water
|
10
|
10
|
10
|
12
|
10
|
12
|
10
|
