south africa chromite sand
Foundry chromite sand is a natural process products of chromite through the broken screen classification, chrome ore, its main chemical composition of cr2o3, this kind of sand heated volume stability, high thermal conductivity, when in contact information with the molten metal, not only has good resistance to basic slag, not with ferric oxide and other chemical reactions, and itself has the characteristics of the solid phase sintering, can be a very good prevent the infiltration of molten metal, avoid to touch sand defects, suitable for all kinds of stainless steel, alloy steel and carbon steel gradually shape the original sand core and coating.
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 AFS45-55 AFS50-55 AFS55-60 AFS60-65 AFS60-70 | |
Packing 1: 1mt big bag with 4 handles and top spout
Packing 2:1mt big bag with 4 handles,top spout and buttom spout.
Packing 3:1mt big bag with 2 handles and top spout
