Brief production of Chromite Foundry sand

 

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 amount of the acid	2ML(MAX)
Percent Soil	0.1% max
Percent Moisture	0.1% max
The Sintered Point	1600 C
Filling Density	2.6 g/cm3
Sintering Point	1800 C min
Melting Temperature	2180 C
Percentage of Free Acid Present in the Sand	0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SIZE OF Chromite sand

Available Size: AFS35-40, AFS40-45, AFS45-50, AFS50-55, AFS55-60, AFS60-65

 

Application of Chromite foundry sand

Chromite foundry sand is used as a highly fireproof sharpener for moulds and cores.

Chromite foundry sand is suitable for all kinds of molding (core-making ) sand, stainless steel , Alloy steel and carbon steel gradually modeling core sand and paint .