Chromite sand is used as a highly fireproof sharpener for moulds and cores. Originally from South Africa. The sand is produced by crushing chrome ore and its washing in spiral concentrators, subsequent drying, dust cleaning, screening and sorting as per grain size.
| Item | Unit | Index |
| Cr2O3 | % | 46.0min |
| SiO2 | % | 1.0max |
| FeO | % | 26.5max |
| CaO | % | 0.30max |
| MgO | % | 10.0max |
| Al2O3 | % | 15.5max |
| P | % | 0.003max |
| S | % | 0.003max |
| Cr/Fe | / | 1.55:1 |
| Bulk Density | g/cm3 | 2.5-3 |
| Color | / | Black |
| PH | / | 7-9 |
| The amount of the acid | / | 2ML(MAX) |
| Percent Soil | % | 0.1max |
| Percent Moisture | % | 0.1max |
| The Sintered | 1600 | |
| Percentage of Free Acid Present in the Sand | % | 0 |
| Filling Density | g/cm3 | 2.6 |
| Sintering Point | 1800min | |
| Melting Temperature | 2180 |
AVAILABLE SIZES:
AFS 25-35 AFS25-30 AFS30-35 AFS35-40 AFS40-45 AFS40-50 AFS45-55 AFS45-50 AFS50-55 AFS55-60 AFS60-65 0-1mm 200mesh 300mesh 400mesh
APPLICATIONS
Chromite Sand in the foundry industry
Its properties enable the material to be used in high duty grey iron and steel foundries as core and mould making sand. Its high thermal conductivity gives it good chilling properties, low thermal expansion gives rise to good dimensional stability. Its basicity being close to neutral allows the use of a wide range of resin bonding systems and inorganic binders, it has a high refractoriness and a broad sieve distribution.
Chromite Sand in the steel industry
In steel production, Chromite Sand is used as well filler for protection of the sliding gate in large steel holding ladles.
Chromite Sand in the glass industry
When ground to a fine flour, Chromite Sand is used for the production of green glass beverage containers.