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| Customization: | Available |
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| Application: | High Temperature Furnace |
| Type: | Refractory Material |
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High Alumina Castable Refractory Cement is a high-strength, heat-resistant unshaped refractory material widely used for furnace lining, boiler maintenance, kiln repair, and high-temperature industrial equipment.
It is produced with high-purity alumina aggregates, refractory cement, and optimized additives, offering excellent mechanical strength, thermal stability, and resistance to abrasion and thermal shock.
This castable is suitable for on-site casting, making it ideal for both new furnace construction and refractory repair projects.
Features Of Refractory Castable
High Alumina Content (50%-70%)
Ensures excellent refractoriness and structural strength.
High Mechanical Strength
High cold crushing strength after drying and firing.
Excellent Heat Resistance
Suitable for long-term operation in high-temperature furnaces.
Good Thermal Shock Resistance
Performs reliably under frequent heating and cooling cycles.
Easy Installation
On-site casting, vibration or pouring installation available.
Wide Application Range
Suitable for furnaces, boilers, kilns, incinerators, and metallurgical equipment.
Applications Of Refractory Castable
Industrial furnaces
Rotary kilns
Tunnel kilns
Heating furnaces
Boiler combustion chambers
Boiler repair and maintenance
Waste heat boilers
Ladles and tundish backup lining
Incinerators
Chemical reactors
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Brand
Properties
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CA-190 | CA-185 | CA-180 | CA-175 | CA-170 | CA-165 | CA-160 | CA-155 | CA-150 | CA-140 | |
| Application Limit TempºC | 1,800 | 1,800 | 1,750 | 1,700 | 1,700 | 1,650 | 1,600 | 1,550 | 1,500 | 1,400 | |
| Bulk Density (g/cm3) | 2.90 | 2.85 | 2.80 | 2.60 | 2.50 | 2.30 | 2.15 | 2.10 | 2.10 | 2.00 | |
| Water Required for Casting (%) | 9-10 | 9-10 | 11-12 | 11-12 | 10-13 | 11-14 | 12-15 | 13-16 | 13-16 | 13-17 | |
| CCS/MOR (MPa) |
110ºCx24h | 55(9) | 30(6) | 30(6) | 30(6) | 25(5) | 25(5) | 20(4) | 20(4.5) | 25(5) | 20(5) |
| 1,200ºCx3h | 50(8) | 35(7) | 35(7) | 30(7) | 20(4) | 17(3.5) | 15(3.5) | 15(2.5) | 17(4) | 14(3) | |
| 1,400ºCx3h | 60(10) | 50(8) | 60(10) | 60(10) | 50(12) | 45(8) | 40(7) | 40(7) | 32(7.5) | - | |
| Permanent Linear Change (%) |
110ºCx24h | -0.03 | -0.03 | -0.06 | -0.06 | -0.06 | -0.06 | -0.06 | -0.06 | -0.06 | -0.06 |
| 1,200ºCx3h | -0.10 | -0.10 | -0.15 | -0.15 | -0.20 | -0.20 | -0.16 | -0.30 | -0.25 | -0.30 | |
| 1,400ºCx3h | -0.20 | -0.20 | -1.0 | -1.0 | -0.8 | -1.0 | -1.0 | -0.7 | - | - | |
| (W/m.k) Thermal conductivity | 400ºC | 0.95 | 0.95 | 0.92 | 0.92 | 0.80 | 0.72 | 0.68 | 0.68 | 0.65 | 0.60 |
| 1,000ºC | 1.1 | 1.05 | 1.02 | 1.02 | 0.90 | 0.85 | 0.88 | 0.80 | 0.76 | 0.71 | |
| (%) Chemical Analysis | Al2O3 | 92 | 88 | 82 | 75 | 62 | 55 | 50 | 47 | 44 | 35 |
| SiO2 | - | - | 10 | 10 | 29 | 40 | 43 | 45 | 50 | 55 | |
Q1: Which alumina content should I choose?
50% for general furnace lining, 60-70% for higher temperature or wear zones.
Q2: Can this castable be used for boiler repair?
Yes, it is suitable for both new lining and maintenance repair.
Q3: Do you provide technical guidance?
Yes, we offer free installation and material selection support.
Q4: Can I get a sample?
Yes, samples are available for testing.
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