| Product |
NORRAM-RE |
CHROMERAM
-80ZC-RE |
CHROMERAM
-40ZC-RE |
CHROMERAM
-30ZC-RE |
CHROMERAM
-20LC-RE |
| Raw materials |
Chamotte |
Alumina-chromia |
Alumina-chromia |
Alumina-chromia |
Alumina-chromia |
| Max operating temperature(°C) |
1500 |
1800 |
1800 |
1800 |
1950 |
| Fill factor(t/m3) |
2.35 |
4.10 |
3.65 |
3.55 |
3.45 |
| Water additions(wt%) |
6.5 - 7.5 |
3.2 - 3.8 |
3.8 - 4.4 |
4 - 4.6 |
4 - 4.6 |
| Chemical composition(%) |
SiO2 |
43 |
2 |
1 |
1 |
0.5 |
| Al2O3 |
52 |
13 |
54 |
64 |
77 |
| Cr2O3 |
|
80 |
40 |
30 |
20 |
| ZrO2 |
|
4 |
2 |
2 |
|
| Bulk specific gravity |
110°Cx24hrs. |
2.35 |
4.10 |
3.67 |
3.57 |
3.45 |
| ( )Temp.x3hrs. |
2.37
(1400) |
4.05
(1500) |
3.61
(1500) |
3.50
(1500) |
3.35
(1500) |
Compressive strength
( )Bending strength
(MPa) |
110°Cx24hrs. |
50 (9) |
70(10) |
75(10) |
70(10) |
70 (18) |
| 800°Cx3hrs. |
55 (12) |
|
|
|
|
| 1000°Cx3hrs. |
|
70(10) |
120(20) |
120(20) |
80 (20) |
| 1400°Cx3hrs. |
90 (16) |
|
|
|
|
| 1500°Cx3hrs. |
|
185(20) |
250(35) |
280(35) |
200 (40) |
| 1600°Cx3hrs. |
|
|
|
|
|
| Premanent linear change(%) |
110°Cx24hrs. |
0 |
0 |
0 |
0 |
0 |
| ( )Temp.x3hrs. |
-0.2 (1400) |
0.3(1500) |
0.1(1500) |
0.2(1500) |
0.4 (1500) |
| Porosity(%) |
110°Cx24hrs. |
10 |
10 |
10 |
11 |
7 |
| 800°Cx3hrs. |
14 |
|
|
|
|
| 1000°Cx3hrs. |
|
16 |
16 |
16 |
16 |
| 1400°Cx3hrs. |
14 |
|
|
|
|
| 1500°Cx3hrs. |
|
15 |
15 |
16 |
17 |
| 1600°Cx3hrs. |
|
|
|
|
|
| Thermal expansion(%) |
at1000°C |
0.45 |
0.70 |
0.70 |
0.70 |
0.8 |
| Bending strength at elevated temp.(MPa) |
at1260°C |
7.8 |
|
|
|
|
Thermal conductivity
(W/mK) |
at500°C |
1.6 |
3.7 |
3.4 |
3.4 |
3.8 |
| at1000°C |
1.8 |
3.3 |
3.0 |
2.5 |
4.6 |
| Standard package quantity(kg) |
25 |
25 |
25 |
25 |
25 |
| Typical applications |
Types of kilns |
Melting furnace |
Melting furnace |
Melting furnace |
Special kilns,
Melting furnace |
