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Chromite sand AFS40-45 AFS45-50 |
![](../images/col_chem_composition.gif) |
Cr2O3 |
![](../images/col_cas.gif) |
7440-47-3 |
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Foundry,Steel casting,moulding sand, ladle filling sand,etc.
a) Chemicals Cr2O3 ¡Ã 46% SiO2 ¡Â 1.0% FeO ¡Â 26.5% Cr£ºFe ¡Ã1.5£º1 MgO ¡Â 10% CaO ¡Â 0.3% Al2O3 ¡Â 15.5% P ¡Â30 ppm S ¡Â30 ppm Cr/Fe ¡Ã 1.55£º1
b) Physical index: Mohs Hardness 5.5-6 Melting Point 2180 ¡É Sintering Point £¾1800¡É Specific Gravity 4.0-4.8 g/cm3 Bulk Density (LPD) 2.5-3 g/cm3 Color Black PH Value 7-9 Thermal conductivity 0.63 W/M• K Thermal Expansion Rate£¨1000¡É£© 0.6% Acid Demand Value (ADV) ¡Â 5ML Turbidity(JTU) ¡Â 110 Soil content ¡Â 0.1% Moisture ¡Â 0.1%
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![](../images/col_use_level.gif) |
ÁÖÁ¶±Þ Å©·Ò±¤»ç
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![](../images/col_property.gif) |
1. High melting point, high sintering temperature 2. Excellent thermal stability 3. High density, high density - 4. Medium Mohs hardness 5.5 5. Strong thermal conductivity 6. Low coefficient of thermal expansion
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Specification£ºAFS25-35 AFS 25-30 AFS 35-40 AFS 40-45 AFS 45-50 AFS 40-50 AFS45-55 AFS50-55
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Industrial field |
civil & construction |
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