Casting grade chromite sand , also known as chrome ore sand, is a special sand for foundry with natural chromite ore from South Africa as the main raw material, which is processed into a specified particle size through crushing, screening and other processes. Its main component content Cr2O2 is more than 46%, with high thermal conductivity, resistance to alkaline slag and solid phase sintering characteristics, which can prevent sand from sticking to castings. It is widely used in large steel castings, coating aggregates and chilling material replacement.
Available size:
Sand: AFS30-35 AFS35-40 AFS40-45 AFS45-50 AFS40-50 AFS45-55 AFS50-55 AFS55-60 AFS60-65
Powder: 180MESH, 200MESH, 325MESH, 400MESH, 500MESH, 600MESH, 800MESH, 1000MESH, 1200MESH, 1500MESH, 2000MESH, 2500MESH
Chemcial index for casting grade AFS40-45 chromite sand:
| Cr2O3 | SiO2 | FeO | CaO | MgO | Al2O3 | P | S | Cr/Fe |
| ≥46.0% | ≤1.0% | ≤26.5% | ≤0.30% | ≤10.0% | ≤15.5% | ≤0.003% | ≤0.003% | 1.55:1 |
Physical index:
| Bulk density | Volume density | colour | PH | sintering temperature | melting point |
| 2.5-3g/cm³ | 4.0～4.8g/cm3 | black | 7-9 | > 1800°C | 2180°C |
Casting grade AFS40-45 chromite sand:
Warehouse and package:
