Refractory Chrome Ore Lumpy
Top quality Chrome Ore Lumpy manufacturer (south africa).The chromite sand is a product of south africa natural chromite ore after crushing and sieving, and its main chemical composition is Cr2O3.
*Melting point of 2150°C
*Good thermal conductivity
*Good resistance to thermal shock
*Excellent resistance to metal penetration or burn-on
South africa chrome ore lumpy is a highly fireproof sharpener for moulds and cores. Originally from South Africa. The sand is produced by crushing chrome ore and its washing in spiral concentrators, subsequent drying, dust cleaning, screening and sorting as per grain size.
Chemical composition
Cr2O3 46.0%min
SiO2 1.0%max
FeO 26.5%max
CaO 0.3%max
MgO 10.0%max
Al2O3 15.5%max
P 0.003%max
S 0.003%max
Cr/Fe 1.55/1
Physical composition
Bulk Density 2.5-3g/cm3
Specific Gravity 4.0-4.8g/cm3
PH Value 7-9
The amount of the acid 2ML max
Percent soil 0.1%max
The sintered 1600
Filling Density 2.6g/cm3
melting temperature 2180°C
Lumpy Chrome Ore
Large, hard pieces of chrome ore, generally sized between 10mm to 300mm.
Typical CrO Content: 38% 44% (sometimes higher for premium grades)
Use: Mostly for ferrochrome production (smelting) in furnaces.
Advantage: Higher metallurgical grade; preferred by many smelters.
Chromite is an oxide mineral composed of chromium, iron, and oxygen (FeCr2O4).
Chemical Classification
Oxide
Chemical Composition
FeCr2O4 with magnesium substituting for iron in significant amounts
Crystal System
Isometric
Uses
An ore of chromium
