The high alumina refractory bricks can be divided into different types according to the content and applications, and the refractories containing more than 45% of Al2O3 are termed as high alumina bricks, while the content of Al2O3 ranges from 48%~80% for our high alumina bricks, the refractoriness will increase with higher alumina composition. and the products characterized by resistance to acid slags and good corrosion resistance, they are widely used in glass furnaces, blast furnaces, hot blast stoves, electric arc furnaces, cement kiln, and other thermal equipment.
Technical Data Sheet:
| Index / Product |
Unit |
High Alumina Bricks |
Phosphate combined High Alumina Brick |
Anti-spalling e High Alumina Brick |
| LZ-48 |
LZ-55 |
LZ-65 |
LZ-70 |
LZ-75 |
LZ-80 |
P |
PA |
GKBL-70 |
KBL-70 |
| Al2O3 ≧ |
% |
48 |
55 |
65 |
70 |
75 |
80 |
75 |
77 |
70 |
70 |
| Fe2O3 ≦ |
% |
- |
- |
- |
- |
- |
- |
3.2 |
3.2 |
- |
- |
| ZrO2 ≧ |
% |
- |
- |
- |
- |
- |
- |
- |
- |
6 |
- |
| Refractories under Load(0.2MPa) ≧ |
℃ |
1420 |
1450 |
1500 |
1510 |
1520 |
1530 |
1350 |
1300 |
1470 |
1470 |
| Reheating Linear Change |
1500℃*2h |
% |
- |
- |
- |
- |
0.2- -0.4 |
0.2- -0.4 |
- |
- |
- |
- |
| 1450℃*2h |
% |
0.1- -0.4 |
0.1- -0.4 |
0.1- -0.4 |
0.1- -0.4 |
- |
- |
- |
- |
0.1- -0.2 |
0.1- -0.2 |
| Apparent Porosity ≦ |
% |
22 |
22 |
24 |
24 |
24 |
21 |
- |
- |
22 |
20 |
| Cold Crushing Strength ≧ |
MPa |
40 |
45 |
50 |
55 |
60 |
70 |
70 |
75 |
60 |
60 |
| Bulk Density ≧ |
g/cm3 |
- |
- |
- |
- |
- |
- |
2.7 |
2.75 |
2.55 |
2.55 |
Note: All chemical-physical data are obtained based on the corresponding refractory bricks of standard size.
