The high-strength alkali-resistant refractory castable has good resistance to alkaline gas and slag, and has a long service life. High strength alkali resistant castable is mainly used for lining of other industrial furnaces such as kiln door cover, decomposition furnace, preheater system and pipeline system.
|
Items |
CH-NJZ48 |
CH-NJZ45 |
|
|
AL2O3/% |
48 |
45 |
|
|
SiO2/ % |
50 |
53 |
|
|
Bulk density (110℃×24h) g/cm3 |
2.2～2.4 |
2.2～2.4 |
|
|
Flexural strength/ MPa ≥ |
110℃×24h |
7 |
8 |
|
1100℃×3h |
7 |
8 |
|
|
Compressive strength/ MPa ≥ |
110℃×24h |
60 |
70 |
|
1100℃×3h |
60 |
70 |
|
|
Permanent Linear Change /%(1100℃×3h) |
0.4 |
0.4 |
|
|
Alkali resistance |
1～2 |
1～2 |
|
|
Maximum Service temperature/℃ |
1300 |
1350 |
|
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