|
Mining
Division Specifications
of Iron Ore
|
||||
| Description |
Calibrated
Iron Ore / Iron ore Lump
|
Iron
Ore Fines
|
||
|
|
Grade
I
|
Grade
II
|
Grade I
|
Grade
II
|
|
Iron
Ore (Fe %)
|
>65%
|
<64% |
>65%
|
<64%
|
|
Silica
(SiO2 %)
|
<2.5%
|
<3% |
<2.5%
|
<3%
|
|
Alumina(Al2O3
%)
|
<2.5%
|
<3% |
<2.5%
|
<3%
|
|
Phosphorous
(P %)
|
<0.045%
|
<0.45% |
<0.05%
|
<0.06%
|
|
Sulphur
(S %)
|
<0.01%
|
<0.025% |
<0.015%
|
<0.025%
|
|
LOI
|
<1.5%
|
<3% |
<2.5%
|
<3.5%
|
|
Moisture
|
||||
|
(Dry Season) |
<2% | <2.5% |
<3% |
<3%
|
|
(Monsoon)
|
<3% | <3.5% |
<6% |
<6%
|
|
Physical Characteristics of Iron Ore |
||
|
Sl.No.
|
Measure
|
Range
|
|
1. |
Tumbler Index | 85-92 |
| 2. | Abrasion Index | 2.26-9.09 |
| 3. | Hardness (Mohs Scale) | 4-6 |
| 4. | Crushing Strength | 4Mpa or 1040 Kgf/cm2 |
| 5. | Bond's Work Index | 15.58 KW-HT |
| 6. | TDI | 11.45-20.04 |
| 7. |
RDI |
26.45-32.06 |
