66% purity Zircon flour for foundry
66% purity Zircon flour for foundry has high melting point, high strength and low coefficient of thermal expansion. It is get from natural zircon mine. Zircon flour is widely used in precision casting, friction materials, ceramic products, instrument anti-corrosion and other fields. Zircon powder is mostly used in investment casting mold coating and ceramic core, and glass manufacturing industry. Zircon powder is the main material in ceramic industry, it also works as glaze to increase the wear resistance and surface finish of ceramic products.
Features of 66% purity Zircon flour for foundry:
- High refractoriness. The melting point up to 2100-2300℃.
- Thermal resistance and chemical stability at high temperatures.
- Neutral PH with low acidity.
- High cleanness and good round grain shape.
- Good grain size and fineness consistency.
- High ability to bind with binders including both organic and inorganic ones.
- Very low thermal expansion coefficient.
- High thermal conductivity.
- Low wettability.
The advantage of 66% purity Zircon flour for foundry:
- Good chemical stability and low wettability prevent sand sticking on castings. It can avoid metal penetration into the mould.
- Low thermal expansion coefficient make casting precise shape and prevent casting unshaped.
- Get better surface finish of metal/steel casting.
- High Recyclability.
- Low wettability and high chemical stability will get recycled sand easy to clean and get uniform particles.
66% purity Zircon flour for foundry Chemical composition:
ZrO2+HfO2 | ≥66.0% |
Fe2O3 | ≤0.08% |
TiO2 | ≤0.06% |
Al2O3 | ≤0.3% |
SiO2(Total) | ≤34% |
Free SiO2(as quartz) | 0.25~0.45% |
U | 200~230PPM |
Th | 150~170PPM |
66% purity Zircon flour for foundry Physical Properties:
Refractive index | 1.93 to 2.01 |
Color | Yellow white |
Specific Gravity | 4.4-4.8g/cm3 |
Bulk density | 2.6-2.8g/cm3 |
Mohs Hardness | 7.5 |
Thermal expansion coefficient | 0.003 cm/cm· ℃ |
Coefficient of Linear Expansion | 7.2x 10-6 cm/cm℃ |
Melting point | 2100-2300℃ |
PH | 6.0-8.5 |
66% purity Zircon flour for foundry Applications:
Foundry such as precise casting, investment casting, foundry coating.
Zirconia Ceramic parts.
Refractory material.
Pigment in paint, comestic, et.
X-ray absorber in the glass industry.
Available sizes:
200mesh 325mesh 2000mesh 2000mesh
Packing:
30/40kgs PVC bags+1mt big bag
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