Chromite sand ( foundry grade ) AFS 45-55.
Place of origin: South Africa
Avaliable size: AFS 45-55
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
Chrome ore 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 .
| South africa chromite sand chemical-physical properties | |
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 | 2.5-3g/cm³ |
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 |
Packing:1mt big bag
RFQ
Q1.Where is the origin of your chromite sand?
A: Our chromite sand origin place is south africa.
Q2.Can you offer samples?
A: Of course,samples are total free! Freight should be paid by buyers.
