Ceramsite sand is a kind of fused ceramic sand,it is made from calcined bauxite with main content aluminium oxide processed by melting,blowing,sieving and blending.
Ceramsite sand Physical and Chemical Composition
| Chemical Analysis[%] | |
| Al2O3 | 70-75 |
| SiO2 | 8-20 |
| Fe2O3 | ≤3 |
| TiO2 | ≤3.5 |
| CaO | ≤0.45 |
| MgO | ≤0.35 |
| K2O | ≤0.33 |
| Na2O | ≤0.08 |
| Physical Properties | |
| Grain shape | Spherical Ball |
| Roundness | 90% |
| Refractoriness: | ＞1790℃ |
| Shape Coefficient | ≤1.1 |
| Thermal Expansion Ratio | 0.13%（Heated up for 10 min at 1000℃） |
| Thermal expansion coefficient | 6×10-6 /℃(20-1000℃) |
| Thermal conductivity | 0.698W/M.K(1200℃) |
| Specific Gravity:: | 1.95-2.05g/cm3 |
| Bulk density(LPD): | 3.4 g/cm3 |
| Color: | Black |
| AVAILABLE SIZES | |
| AFS25-35,AFS35-45,AFS45-55,AFS55-65,AFS60-70,AFS70-80,AFS95-110 Customized sizes are available upon request | |
Applications:
- Shell molding
- Precision Casting
- Lost foam casting
- Heavy steel casting
- Resin coated sand casting
- Vacuum casting
- Investment casting
| Applications | Grit Size | AFS SIZE |
| Foundry sand for Lost foam | 8-15#（10#）10-20#，20-30# | AFS25-35 |
| Filler sand | 30# | |
| No bake sand including furan resin /alkaline-phenolic resin molding and core making/ Pep set /Sodium-silicate bonded sand | 30-50#,40-70#,50-70#,70-140# | AFS35-45,AFS25-35,AFS45-55, AFS55-65,AFS60-70,AFS70-80 |
| Shell molding, resin coated sand casting | 50-100#,70-140#,100-200# | AFS55-65,AFS60-70,AFS70-80, AFS95-110 |
| Lost foam casting coating | 140-270#,-200# | |
| Molding sand alcohol-based coating | -200# | |
| 3D printing, precision casting, investment casting | -140# |