| Product |
950LP |
850LP |
450LP |
420LP |
100LP |
| Raw materials |
High purity alumina |
High alumina bricks |
High-quality chamotte |
Chamotte |
Alumina-chrome |
| Max operating temperature(°C) |
1800
|
1600 |
1550 |
1400 |
1950 |
| Chemical composition(%) |
SiO2 |
4.7 |
10 |
51 |
52 |
0.5 |
| Al2O3 |
93 |
84 |
45 |
42 |
86 |
| Cr2O3 |
- |
- |
- |
- |
10 |
| Bulk specific gravity |
110°Cx24hrs. |
3.20 |
2.95 |
2.40 |
2.35 |
3.40 |
Compressive strength
( )Bending strength
(MPa) |
110°Cx24hrs. |
98
(25)
|
80
(15)
|
60
(14)
|
50
(9)
|
65
(13) |
| 800°Cx3hrs. |
108
(25) |
83
(16) |
70
(15) |
55
(12) |
- |
| 1400°Cx3hrs. |
176
(42) |
117
(23) |
95
(23) |
90
(16) |
95
(17)
*at1000°C |
1600°Cx3hrs. |
215
(49) |
176
(33) |
- |
- |
195
(35)
*at1500°C |
| Premanent linear change(%) |
( )Temp.x3hrs. |
-0.3
(1600) |
0.1
(1600) |
-0.3
(1400) |
-0.2
(1400) |
0.3
(1500) |
| Porosity(%) |
110°Cx24hrs. |
12 |
8 |
8 |
10 |
13 |
| 800°Cx3hrs. |
17 |
13 |
14 |
14 |
- |
| 1400°Cx3hrs. |
15
|
16 |
16 |
14 |
16 |
| 1600°Cx3hrs. |
12 |
16 |
- |
- |
17 |
| Thermal expansion(%) |
at1000°C |
0.6 |
0.7 |
0.45 |
0.45 |
0.8 |
Thermal conductivity
(W/m/K) |
at500°C
|
1.98 |
1.86 |
1.28 |
1.22 |
2.09 |
| at1000°C |
2.21 |
2.09 |
1.4 |
1.34 |
2.33 |
| Typical applications |
Peep hole,
Burner block |
Burner block |
Tank block |
Peep hole in regenerator |
|
