Fused Bauxite Beads Foundry Sand Ceramsite Sand

Model:	40-70#，70-140#
Brand:	haixu
Origin:	Made In China
Category:	Metallurgy , Mining & Energy / Metallurgy & Mining / Non-metallic Mineral Products
Label:	Fused Bauxite Beads , Foundry Sand , Ceramsite Sand
Price:	US $560 / Ton
Min. Order:	1 Ton

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Product Description

Description：

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#