Chromite sand ,Its main chemical composition is Cr2O3, This kind of sand heating volume is stable , High thermal conductivity , sand molten metal contact , not only has a good alkali slag resistance , not with iron oxide and other chemical reaction , and itself has the characteristics of solid phase sintering , can well prevent the penetration of molten metal , avoid sand defects , suitable for all kinds of stainless steel , Alloy steel and carbon steel gradually modeling core sand and paint .
Chromite sand , Is a special kind of sand for casting , It is a natural spinel mainly composed of chromite ,It is crushed , ground and screened into specified grain size , which is suitable for molding (core-making ) sand
| Physical and Chemical Index | ||
| Item | Unit | Index |
| Cr2O3 | % | ≥46.0% |
| SiO2 | % | ≤1.0% |
| FeO | % | ≤26.5% |
| CaO | % | ≤0.30% |
| MgO | % | ≤10.0% |
| Al2O3 | % | ≤15.5% |
| P | % | ≤0.003% |
| S | % | ≤0.003% |
| Cr/Fe | 1.55:1 | |
| Bulk Density | g/cm3 | 2.5-3 |
| Color | / | Black |
| PH | / | 7-9 |
| The amount of the acid | / | ≤ 2 ML |
| Percent soil | % | ≤0.1 |
| The sintered | °C | 1600 |
| Percentage of free acid present in the sand | % | 0 |
| filling density | g/cm3 | 2.6 |
| sintering point | °C | > 1,800 |
| melting temperature | °C | 2,180 |
| PACKING: | 1MT big bag | |
| SIZES: | AFS35-40 AFS40-45 AFS45-50 AFS50-55 AFS55-60 AFS60-65 | |
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