Lightweight refractory castable is a type of high-temperature resistant amorphous refractory material. It can be cast. And it has high insulation and refractoriness. Its application is for furnace insulation linings, molded castings, and filling materials. If you need this product, we can arrange for quick delivery.
- Bulk Density: 0.5-1.8 g/cm³;
- Max. Service Temperatur: 1150-1250ºC;
- Thermal Conductivity Coefficient: 0.15-0.75;
- Cold Crushing Strength: ≥1.5-30MPa;
- Permanent Linear Change: -1.5–0.5(1000ºC*3h)/%;
Indicators of Kerui Insulating Castable
| Item | QG-1.0 | QG-0.8 | QG-0.6 | |
|---|---|---|---|---|
| Maximum Service Temperature，℃ | 1250 | 1200 | 1150 | |
| Al₂O₃，% | 43 | 40 | 36 | |
| SiO₂，% | 36 | 37 | 36 | |
| Bulk Density，g/cm³ | 1 | 0.8 | 0.5 | |
| Thermal Conductivity Coefficient，W/(m.K) | 350℃ | ≤0.3 | ≤0.25 | ≤0.15 |
| 700℃ | ≤0.4 | ≤0.30 | ≤0.20 | |
| Cold Crushing Strength，Mpa | 110℃*24h | ≥4.0 | ≥2.0 | ≥1.5 |
| 1100℃*3h | ≥5.5 | ≥2.0 | ≥1.5 | |
| Linear Change Rate After Burning PLC，% | 1100℃*3h | ±0.4 | ±0.3 | ±0.2 |
| Permanent Linear Change(1000℃*3h)/% | -1.0 | -1.0 | -1.5 | |
Components of Insulating Refractory Castable
Lightweight refractory castables are mainly prepared by mixing lightweight refractory aggregates, refractory powders, binders, and admixtures. Among materials, the refractory aggregates commonly include aluminate cement, high alumina fines, and ceramsite. Finally, these premixed castables are mixed uniformly with water or other solutions and used for construction applications.
Key Features of Kerui Insulating Castable Refractory
- High compressive strength: The cold crushing strength of lightweight castables ranges from 1.5-30MPa. Therefore, it has a strong compressive strength in industrial applications.
- Low thermal conductivity: Its thermal conductivity ranges from 0.15-0.75. So, it provides good insulation and energy-saving effects for linings and other high-temperature applications.
- Low bulk density: The bulk density of insulating castable material ranges from 0.5-1.8. Therefore, its light weight makes it easier to handle.
- Good thermal shock resistance: It has low thermal expansion. Permanent linear change ranges from -1.5 to -0.5.
- Strong sealing properties: It is a monolithic refractory product. Accordingly, it can be cast or filled into any shape according to construction needs.
Uses of Insulation Refractory Castable
The applications of lightweight refractory castables are commonly in high-temperature furnace linings, furnace covers, roofs, bases, thermal equipment, chimneys, pipelines, and others. Its uses are in the following industries:
- Metal smelting: Metals include steel, iron, and aluminum. Its uses are typically in smelting furnaces, heat treatment furnaces, forging furnaces, casting furnaces, and so on.
- Non-ferrous metal smelting: Non-ferrous metal smelting furnaces, and others.
- Power generation: Boilers, and so on.
- Building materials: Brick kilns, cement rotary kilns, ceramic kilns, lime kilns, ore dressing furnaces, and so on.
- Chemical industry: Petrochemical heaters, combustion chambers, reactors, coke ovens, and others.
Get Your Customized Insulating Castable Now
Kerui Refractory is a manufacturer of refractory materials. We offer factory prices and high-quality lightweight insulating castable refractory. Our factory has a large inventory available as well. If you urgently need this product, please contact us. Whether it’s in stock or customized production, we can arrange for quick delivery. So, please let us know your requirements. See more news to follow on our Facebook.