Insulating firebricks are classified under temperature between 1300ºC and 1700ºC, manufactured from high purity alumina clay by mixing, press-forming, drying, sintering and machining. Bricks contain carefully-graded organic fillers which are burned out during sintering to give a uniform controllable pore structure. This technique makes product feature low thermal conductivity and excellent heat insulation
Insulating fire clay brick can be used as a hot face lining directly exposed to the heat or as a backup insulation layer in iron and steel mills, non ferrous foundries, petrochemical, ceramic, glass, cement and oil fired electric power generating plants.
Characteristics of our JM INSULATING FIRE BRICK--Mullite IFB(JM-IFB):
1) After shaping and sintering, cutting and grinding processing are done, drilling is necessary according to brick drawings.
2) Little impurities of iron and alkali metal
3) High temperature resistance
4) uniform structure and high cold crushing strength
5) Good thermal shock resistance, stable volume, good insulation performance in high temperature
6) Low thermal conductivity
Application:
Our mullite IFB can be used as a hot face lining directly exposed to the fire, as a backup insulation layer in iron and steel mills, non ferrous foundries, petrochemical, ceramic, glass, cement and oil fired electric power generating plants.
| ITEM |
|
JM23 |
JM26 |
JM28 |
JM30 |
| Service temperature |
º C |
1260 |
1430 |
1540 |
1650 |
| BD, ≤ |
g/cm3 |
0.5 |
0.8 |
0.9 |
1.0 |
| MOR, ≥ |
Mpa |
0.7 |
1.1 |
1.5 |
2 |
| CCS, ≥ |
Mpa |
1.0 |
2.0 |
2.2 |
2.7 |
| PLC |
% |
0.3 |
0.4 |
0.5 |
|
| |
º C |
1230*8 |
1400*8 |
1510*8 |
|
| Reversible thermal expansion%≤ |
0.6 |
0.7 |
0.8 |
0.9 |
| TC, w/m. k |
400º C |
0.15 |
0.28 |
0.32 |
|
| |
600º C |
0.17 |
0.31 |
0.34 |
|
| |
800º C |
0.19 |
0.33 |
0.36 |
|
| |
1000º C |
0.24 |
0.35 |
0.39 |
|
| Al2O3, %≥ |
|
37 |
50 |
60 |
68 |
| Fe2O3, %≤ |
|
1.0 |
1.0 |
0.7 |
0.5 |
| SiO2, %≤ |
|
45 |
43 |
36 |
29 |
Audited Supplier 
){kind=link}
){kind=link}