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Chromite Sand origin： South Africa.
We are chromite sand manufacturer, we import chrome ore from south africa ,then crushing and sieving in lianyungang china
Chromite Sand is a naturally occurring mineral consisting primarily of the oxides of chrome and iron. Its properties enable the material to be used in high duty grey iron and steel foundries as a core and mould making sand. Its high thermal conductivity gives it good chilling properties whilst its 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.
Chromite sand advantages:
Good thermal conductivity
Good resistance to thermal shock
Excellent resistance to metal penetration or burn-on
Resists slag attack
High dimensional stability
Chromite sand physical-chemical index
|
Item |
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 |
2.5-3 |
|
Color |
Black |
|
PH |
7-9 |
|
The amount of the acid |
≤ 2 ML |
|
Percent soil |
≤0.1% |
|
Percent Moisture |
≤0.1% |
|
The sintered |
1600℃ |
|
Percentage of free acid present in the sand |
0 |
|
filling density |
2.6g/cm³ |
|
sintering point |
> 1800°C |
|
melting temperature |
2180°C |
|
Avaliable sizes |
|
|
AFS25-35 AFS30-35 AFS35-40 AFS40-45 AFS45-50 AFS45-55 AFS50-55 AFS55-60 AFS60-65 AFS60-70 |
|
