Product Introduction
High-alumina castable is a refractory castable made of high-alumina raw materials as aggregates and powders, and added with binders. It has high mechanical strength and good thermal shock resistance, abrasion resistance and other properties.
The main raw materials of high-alumina castables include high-alumina bauxite, alumina powder and silica sand. Among them, high-alumina bauxite is the main raw material for preparing high-alumina refractory castables, which contains a high alumina content and has good refractory and wear resistance. Alumina powder is an important additive to improve the refractory performance of castables, which can increase the alumina content of castables and improve their refractoriness. Silica sand can improve the construction performance of castables, making them easier to construct and shape.
Technical Data
The price of high alumina castable varies depending on the brand, specification and application. The following are Rongsheng’s reference specifications, and our products support customization!
| 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 | |
Application Of High Alumina Castable
1. 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.
2. It 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.