Original: China

Material Type: Others

Main Color:

Surface Finish:

Reference Price: US$ / M2

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Minimum Order:  M2

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Deion：
Ceramic 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.

Characters:
1.Low thermal expansion coefficient
2.spherical shape,good flow ability,easy to shakeout
3.smooth surface,compact structure
4.chemically neutral material
5.high temperature resistance,good refractoriness
6.Recycle up to 10 times,highly cost effective.
7.Save resin consumption with casting tech such as shell molding,Resin coated sand casting,Vacuum casting,etc.

Performance comparison of ceramic foundry sand, Chromite sand and Zircon Sand:
Index ceramic foundry sand Chromite sand Zircon Sand
PH value 7.65 4.56 8.24
Bulk Density(g/cm3) 1.95-2.05 2.9-3.1 2.6-2.7
True density(g/cm3) 3.4 4.4-4.71 3.9-4.8
Shape Spherical Irregular Irregular
Amount of binder
(Waterglass+CO2hardening) 3----4 7----8 7---8


TYPICAL 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
　 　
TYPICAL PHYSICAL PROPERTIES
Refractoriness ≥1800 ℃
Specific gravity: 3.4g/cm3
Bulk density(LPD): 1.95-2.05 g/cm3
Color: black brown
Grit shape: spherical Ball
Thermal expansion coefficient 6x10-6 /℃(20-1000℃)
Thermal conductivity 0.698W/M.K(1200℃)
Thermal expansion ratio 0.13
Angularity ≤1.1
Available sizes
AFS15-20,AFS 15-25,AFS25-35,AFS25-30,AFS30-35,AFS35-40,AFS40-45,AFS45-50,AFS40-50,AFS50-55,AFS55-60,AFS60-65 Customized sizes are available upon request


Sizes for different casting applications：
Applications AFS SIZE Grit Size
Foundry sand for Lost foam AFS25-35 8-15#（10#）10-20#，20-30#
Filler sand 30#
No bake sand including furan resin /alkaline-phenolic resin molding and core making/ Pep set /Sodium-silicate bonded sand AFS35-45,AFS25-35,AFS45-55,
AFS55-65,AFS60-70,AFS70-80 30-50#,40-70#,50-70#,70-140#
Shell molding, resin coated sand casting AFS55-65,AFS60-70,AFS70-80,
AFS95-110 50-100#,70-140#,100-200#
Lost foam casting coating 140-270#,-200#
Molding sand alcohol-based coating AFS SIZE -200#
3D printing, precision casting, investment casting AFS25-35 -140#

Applications:
1. Raw material for ladle filler sand
2. Shell molding
3. Precision Casting
4. Lost foam casting
5. Heavy steel casting
6. Resin coated sand casting
7. Vacuum casting
8. Investment casting