Refractory Castable
PRODUCTS
High alumina refractory castable
Details
High alumina refractory castable is widely used in the masonry and maintenance of industrial kilns. Common high-alumina castables include portland cement castable, calcium aluminate cement castable, water glass bonded castable, phosphate bonded castable and so on. With the continuous innovation of product types, the quality of high-alumina castables has also gradually improved, including low-cement refractory castables, ultra-low cement castables and cement-free castables.
High alumina refractory castable
| Product name / index | High alumina cement refractory castable | Low calcium aluminate cementRefractory castable | ||||
| Clay refractory castable | High aluminum refractory castable | |||||
| Aluminum-40 | Aluminum-50 | Aluminum-55 | Aluminum-65 | Aluminum-70 | ||
| Volume density（110℃±5℃x24h）＞ | kg/m | 1900 | 2100 | 2200 | 2300 | 2500 |
| Drying compressive strength | Mpa | 20 | 23 | 20 | 23 | 40 |
| Drying flexural strength | Mpa | 4 | 5 | 4 | 5 | 6 |
| 800℃ high temperature residual strength | % | 40 | 50 | 40 | 50 | 60 |
| Thermal shock stability | 次 | 15 | 15 | 15 | 15 | 20 |
| Line changes after burning, moisturizing for 3h, no more than 1% of the experimental temperature | ℃ | 1200 | 1250 | 1300 | 1350 | 1400 |
| Refractory degree＞ | ℃ | 1650 | 1670 | 1700 | 1730 | 1770 |
| AL203> | % | 40 | 50 | 55 | 65 | 75 |
| Max particle size of refractory aggregate | mm | When the pouring thickness is ≤60mm, ≤5mm | ||||
| When the pouring thickness is 60-100, ≤10mm | ||||||
| When the pouring thickness is ≥100mm, <15mm | ||||||
Product Function
In the production process of refractory bricks, poor molding or firing problems may be related to unreasonable particle grading.
Product Application
high alumina refractory castable is suitable for heating furnace, soaking furnace, heat treatment furnace and rotary kiln; Various high-temperature burner linings, heating furnace water pipe wrapping linings, parts of refining equipment outside molten steel furnace and high-temperature wear-resistant linings of petrochemical catalytic cracking reactors; Liners such as blast furnace taphole, cupola taphole, integral powder gun for hot metal pretreatment, etc. It can also be used to manufacture large prefabricated blocks and furnace linings for rapid construction.