Product name
Chromite sand (Iron Chrominium Oxide, FeCr2O4)
Description/Application
It is an oxide mineral belonging to the spinel group. Magnesium can substitute for iron in variable amounts as it forms a solid solution with magnesiochromite (MgCr2O4);[5] substitution of aluminium occurs leading to hercynite (FeAl2O4).[6]
It is an industrially important mineral for the production of metallic chromium, used as an alloying ingredient in stainless and tool steels. Its properties enable the material to be used in high duty grey iron and steel foundries as core and mould making sand. Its high thermal conductivity gives it good chilling properties, 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, it has a high refractoriness and a broad sieve distribution.
In steel production, Chromite Sand is used as well filler for protection of the sliding gate in large steel holding ladles.
When ground to a fine flour, Chromite Sand is used for the production of green glass beverage containers Its properties enable the material to be used in high duty grey iron and steel foundries as core and mould making sand. Its high thermal conductivity gives it good chilling properties, 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, it has a high refractoriness and a broad sieve distribution.
In steel production, Chromite Sand is used as well filler for protection of the sliding gate in large steel holding ladles.
When ground to a fine flour, Chromite Sand is used for the production of green glass beverage containers
- Melting point of 2150°C
- Good thermal conductivity
- Good resistance to thermal shock
- Excellent resistance to metal penetration or burn-on
- Resists slag attack
- High dimensional stability