High alumina bricks are produced on the basis of raw material with high contents of AL2O3: corundum, mullite, bauxite, etc.. They have high refractoriness,good physical and chemical performance in high temperature,stable volume; They can be used in ferrous and non-ferrous metallurgy, cement industry, ceramic industry, glass industry, etc.
Index Products |
Series |
Al2O3% |
Fe2O3 (Max.)% |
MgO (Min)% |
SiC (Min.)% |
Apparent Porosity (Max.)% |
Cold Crushing Strength (Min.)MPa |
Refractoriness (Min.)℃ |
Reheating Linear Change% |
Refractoriness Under Load(0.2MPa,0.4%shrinkage) (Min.)℃ |
Thermal Shock Resistence (1100℃-water quench), cycles |
Common High Alumina Bricks |
LZ-80 |
80(Min.) |
2.0 |
|
|
22 |
55 |
1790 |
1500℃×2h+0.1-0.4 |
1530 |
4-10 |
LZ-75 |
75(Min.) |
|
|
|
23 |
53.9 |
1790 |
1470℃×2h+0.1-0.4 |
1520 |
|
|
LZ-65 |
65(Min.) |
|
|
|
23 |
49 |
1790 |
1450℃×2h+0.1-0.4 |
1500 |
|
|
LZ-55 |
55(Min.) |
|
|
|
22 |
44.1 |
1770 |
1450℃×2h+0.1-0.4 |
1470 |
|
|
LZ-48 |
48(Min.) |
|
|
|
22 |
39.2 |
1750 |
1400℃×2h+0.1-0.4 |
1420 |
|
|
High Alumina-Cordierite Bricks |
48-55 |
2.0 |
2-3.5 |
|
26 |
25 |
1650 |
1350℃×2h+0.3-0.7 |
|
30(Min.) |
|
Low-creep High Alumina Bricks For Hot-blast Stove |
55(Min.) |
2.0 |
|
|
24 |
35 |
1770 |
|
|
0.2 |
|
High Alumina-silica Bricks |
60(Min.) |
2.0 |
|
|
23 |
50 |
1500 |
|
|
|
|
High Alumina-silicon Carbide Bricks |
40(Min.) |
|
|
10 |
|
40 |
1750 |
|
1500 |
30 |