High Refractoriness Ceramsite Foundry Sand Suppliers and Factory in China
Our High Refractoriness Ceramsite Foundry Sand is a premium, engineered ceramic material specifically designed for high-performance steel casting and diverse metallurgical applications. Composed primarily of Mullite and Corundum phases, this spherical ceramic sand provides an exceptional thermal stability threshold of up to 1800℃, ensuring structural integrity under extreme heat.
By optimizing the grain shape and particle size distribution, our Ceramsite sand enhances mold flowability and reduces binder consumption. Whether you are working with aluminum, ductile iron, or complex alloys, this neutral pH ceramic medium minimizes casting defects and significantly boosts production output through superior collapsibility and thermal expansion control.
Detailed Parameters
| Al₂O₃ Content | ≥53% | Refractoriness | ≥1800℃ |
|---|---|---|---|
| SiO₂ Content | ≤37% | Bulk Density | 1.45-1.6 g/cm³ |
| Fe₂O₃ / TiO₂ | ＜4% / ＜3% | Angular Coefficient | ≤1.1 (Spherical) |
| Particle Size | 45μm - 2000μm | Thermal Expansion | 4.5-6.5x10-6/k |
| Mineral Composition | Mullite + Corundum | PH Value | 6.6-7.3 (Neutral) |
Key Advantages
Superior Flowability
The perfectly spherical shape reduces surface friction, offering excellent filling ability and requiring less binder for high mold strength.
Low Thermal Expansion
Minimizes dimensional variations in castings, significantly reducing cracks, defects, and increasing overall yield.
High Reclamation Rate
High particle strength results in a lower breakage rate during reclamation, reducing waste and environmental pollution.
Extreme Heat Resistance
With refractoriness up to 1800℃, it maintains thermal stability in the most demanding steel casting environments.
Neutral Chemical Nature
The neutral pH value ensures compatibility with all metal alloys and a wide variety of binder systems.
Custom Grain Sizing
Particle size distribution can be customized from 45μm to 2000μm to meet specific foundry requirements.
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Binder Compatibility
Works seamlessly with phenolic urethanes, furan, sodium silicate, and shell resins.
Alloy Versatility
Optimized for Aluminum, Gray Iron, Ductile Iron, Steel, Copper, and Magnesium.
Venting Ability
Spherical geometry provides higher gas permeability, reducing porosity in the final casting.
Quality Control
Strict monitoring of L.O.I. (
Size Customization
Full spectrum of AFS grain sizes available, from 20/40 to 100/200 mesh.
Waste Reduction
Engineered for high durability to ensure maximum cycles per ton of sand.
Investment Return Comparison
| Metric | Standard Silica Sand | Ceramsite Foundry Sand |
|---|---|---|
| Refractoriness | ~1600℃ | ≥1800℃ |
| Binder Usage | Standard High | Reduced (Spherical Shape) |
| Casting Defects | Moderate Expansion | Low Thermal Expansion |
| Reclamation Rate | Lower Durability | Significantly Higher |
| Surface Finish | Standard | Superior Smoothness |
Frequently Asked Questions
Its high refractoriness (1800℃) and low thermal expansion rate significantly reduce casting defects and cracks compared to traditional sands.
It is compatible with almost all systems, including phenolic urethanes, phenolic ester, furan, sodium silicate, bentonite clays, and alkyd oils.
The spherical shape improves flowability and filling ability, allowing for less binder usage while maintaining high mold strength and better venting.
Yes, we offer customized particle size distributions ranging from 45μm to 2000μm to match your specific AFS grain requirements.
Absolutely. It is engineered for use with aluminum, copper, magnesium, and other non-ferrous alloys due to its neutral pH and high stability.
Due to higher particle strength, there is a much lower breakage rate, leading to a better reclamation rate and reduced waste sand pollution.
