1- Refractory Grade Chrome Ore Concentrates
A) Silica Less than 1%
Cr2O3 = 57% min, typ. 59%
SiO2 = 0.95% max, typ 0.80%
Cr:Fe = 3.2:1 min, typ 3.4:1
MgO = 20% max
Fe2O3 = 17% max
CaO = 0.50% max
Al2O3 = 13% max
P = 0.007% max
S = 0.05% max
Moisture: 0.5% max
Size: 0-1 mm = 97% min
(Moisture free at 105c)
Packing: in 1 ton Jumbo Bags inserted in 20ft Container.
Quantity: 100 – 500 mt per month
B) Silica Less than 1.4%
Cr2O3 = 55% min, typ. 57%
SiO2 = 1.40% max, typ 1.25%
Cr:Fe = 3.1:1 min, typ 3.3:1
MgO = 20% max
Fe2O3 = 17% max
CaO = 0.50% max
Al2O3 = 13% max
P = 0.007% max
S = 0.05% max
Moisture: 0.5% max
Size: 0-1 mm = 97% min
(Moisture free at 105c)
Packing: in 1 ton Jumbo Bags inserted in 20ft Container.
Quantity: 100 – 500 mt per month
C) Silica Less than 2.0%
Cr2O3 = 52% min, typ. 53%
SiO2 = 2.0% max, typ 1.70%
Cr:Fe = 3.0:1 min, typ 3.1:1
MgO = 20% max
Fe2O3 = 18% max
CaO = 0.50% max
Al2O3 = 13% max
P = 0.007% max
S = 0.05% max
Moisture: 0.5% max
Size: 0-1 mm = 97% min
(Moisture free at 105c)
Packing: in 1 ton Jumbo Bags inserted in 20ft Container.
Quantity: 100 – 500 mt per month
2- Refractory Grade Chrome ore Lumps,
Cr2O3 = 50% min, typ. 53-54%
SiO2 = 3.5% max, typ 2.2%
Cr:Fe = 3.0:1 min, typ 3.24:1
MgO = 20% max
FeO = 16% max
CaO = 0.8% max
Al2O3 = 13% max
P = 0.007% max
S = 0.05% max
Moisture: 2% max
Size: 0-10mm = 10% max
10 – 300 mm = 90% min
(Moisture free at 105c)
Quantity: 100 – 2000 mt
Packing: In Bulk in 20ft Containers.
3- Semi Refractory Chrome ore Lumps,
Cr2O3 = 48%, 46% min,
SiO2 = 6.0% max, typ 4.50%
Cr:Fe = 2.80:1 min, typ 3.10:1
MgO = 20% max
FeO = 16% max
CaO = 1% max
Al2O3 = 13% max
P = 0.007% max
S = 0.05% max
Moisture: 3% max
Size: 0-10mm = 30% max
10 – 300 mm = 70% min
(Moisture free at 105c)
Quantity: 500 – 2000 mt
Packing: in Bulk in 20ft Containers
4- Chrome ore Lumps:
Cr2O3 = 42%, 40% min,
SiO2 = 12% max,
Cr:Fe = 2.60:1 min,
MgO = 22% max
Al2O3 = 10% max
P = 0.007% max
S = 0.05% max
Moisture: 3% max
Size: 0-10mm = 30% max
10 – 300 mm = 70% min
(Moisture free at 105c)
Quantity: 1000-3000 mt
Packing: in Bulk in 20ft Containers