high alumina castable is made of high-alumina bauxite aggregate as the main raw material, and according to the proportions of different granules, calcium aluminate cement binders and admixtures are added to mix the bulk cast refractory castables. It can be used directly after adding water and stirred, and are molded by vibration casting. High-alumina castable is also called high-aluminum low-cement castable. It is easy to construct. It can be cast directly on the industrial furnace to form an integral lining, or it can be premade into refractory prefabricated blocks and used in masonry in the industrial furnace.
Technical Datas Of High Alumina Castable
| Index | High Alumina Castable | |
| Al2o3 % | 65 | |
| Sio2 % | 30 | |
| Cao % | 6 | |
| Bulk density g/cm³ | 110℃，24h | 2.5 |
| 1350℃，24h | 2.6 | |
| Cold bending strength MPA | 110℃，24h | 6 |
| 1350℃，24h | 7.5 | |
| Hot bending strength MPA | 110℃，24h | 45 |
| 1350℃，24h | 60 | |
| 1350 Burning line rate of change | 0.2 | |
| Mixing water consumption % | 10-12% | |
| Operating temperature | 1400 | |
High-aluminum castable is suitable for heating furnaces, soaking furnaces, heat treatment furnaces, rotary kiln; various high-temperature burner linings, heating furnace pipe packing linings, steel furnace scouring device components and petrochemical catalytic cracking reactor High-temperature wear-resistant lining; blast furnace iron channel, iron furnace iron trough, hot metal pretreatment with the overall dust gun and other lining. It can also be used to make large prefabricated blocks and linings.