Chromite foundry sand, Originally from South Africa (SAMANCOR),is a special kind of sand for casting , chromite sand is a natural spinel mainly composed of chromite ,
Chromite foundry sand used as a highly fireproof sharpener for moulds and cores.
Chrome ore sand,It’s 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 .
| Chemical Properties | |
| Item | 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 |
| Physical Properties | |
| Bulk Density | 2.5-3 g/cm3 |
| Color | Black |
| PH | 7-9 |
| The Sintered Point | 1600 C |
| Filling Density | 2.6 g/cm3 |
| Sintering Point | 1800 C min |
| Melting Temperature | 2180 C |
Available Size for foundry/casting
AFS20-30 AFS30-35 AFS35-40 AFS40-45 AFS45-50 AFS45-55 AFS55-60 AFS60-70
Application of Chromite sand for foundry/casting
Chromite sand foundry is used as a highly fireproof sharpener for moulds and cores.
Chromite sand foundry is suitable for all kinds of molding (core-making ) sand, stainless steel , Alloy steel and carbon steel gradually modeling core sand and paint .
Available Size for clourant
200mesh 325mesh 400mesh 600mesh 800mesh 1000mesh 1200mesh 1500mesh 2000mesh
Passing rate 90% min
Available Cr2O3 content range 40-46%
Application of Chromite powder for clourant
Glass industry
Ceramic industry
Refractory industry
Plastic&rubber industry
Coating&pigment industry
