60 Self-Flowing Castable is formulated using high-alumina aggregates and micro powders with a low-cement bonding system. During construction, the material flows under its own weight, filling the formwork to form a uniform and dense refractory lining, effectively minimizing the impact of human factors on construction quality.
The flowability of the castable is strongly influenced by its particle size distribution and aggregate proportion. Proper selection of aggregate size and distribution is critical. The critical particle size of refractory aggregates is generally 5 mm, occasionally extending to 8 mm. Larger particles are heavier and more difficult to suspend, reducing flow. Ideally, aggregates should be approximately spherical with low water absorption to facilitate smooth flow.
For optimal performance, the mixture must flow freely, degas, and self-compact within a controlled setting time. Flowability tests of the castable immediately after mixing and at 10, 20, and 30 minutes showed self-flow diameters of 210 mm, 210 mm, 205 mm, and 200 mm, respectively. This indicates that the mixture should be used within 30 minutes to maintain sufficient fluidity and ensure optimal performance.
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Serial Number |
Indicator Name |
Numerical Values |
|
|
1 |
Bulk Density |
110℃×24h |
2.3±0.05t/m³ |
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2 |
Chemical Composition |
Al2O3 |
≥60% |
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3 |
Linear Change |
1350℃×3h |
-0.5～±0.5% |
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4 |
Compressive Strength ≥ |
110℃×24h |
≥35MPa |
|
1350℃×3h |
≥55MPa |
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5 |
Flexural Strength ≥ |
110℃×24h |
≥5MPa |
|
1350℃×3h |
≥6MPa |
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● Excellent Self-Flowing Properties The castable exhibits high fluidity, enabling it to self-level and fill molds and complex structural areas without vibration, thereby significantly reducing the need for mechanical compaction. |
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● Designed with 60% Al₂O₃ Content Provides an optimal balance of refractoriness, mechanical strength, and erosion resistance while maintaining cost-effectiveness, making it suitable for a wide range of industrial applications. |
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● Low-Cement Bonding System Features low CaO content and a dense microstructure, providing enhanced volume stability and strength retention at elevated temperatures. |
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● Consistent Molding Quality Minimizes delamination, segregation, and voids, resulting in a smooth surface and a uniform internal structure. |
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●Adaptable to Complex Construction Environments Ideal for areas with dense anchors, confined spaces, or limited accessibility where manual vibration is difficult or impractical. |
●Power industry: Boiler furnaces, cyclone separators, and return material systems
●Cement industry: Calciners, preheater cones, and flue systems
●Metallurgical industry: Heating furnaces, heat treatment furnaces, and complex furnace wall structures
●Chemical and petrochemical industries: Reactors, heating furnaces, and equipment linings
●Other industrial furnaces and kilns: Areas with high requirements for construction efficiency and consistent molding quality
Packaging: Available in 50 kg individual bags, ton bags, or palletized sealed packaging; customization is available.
Storage: Store in a dry and well-ventilated environment. Product performance remains stable under the specified storage conditions.
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