Quality Specification of Kudremukh Pellets

 

Quality Specification of Kudremukh Pellet - Blast Furnace Grade:

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             Chemical Quality

Parameter Specification Typical
Fe 65% min 65.5%
SiO2+Al2 O3 5% max 4.5%
Al2 O3 0.60% max 0.55%
Na2O 0.05% max 0.025%
K20 0.05% max 0.025%
TiO2 0.10% max 0.10%
Mn 0.10% max 0.08%
P 0.04% max 0.03%
S 0.02% max 0.01%
V 0.05% max 0.02%
Basicity
(CaO+MgO)/(SiO>2+Al2O3 ) 0.40
Moisture (free moisture loss at 105 degree centigrade)
4% max (fair season) 6% max (monsoon)
Physical Quality
Screen Analysis Specification Typical
+16mm 5%max 4%
-16mm ,+9mm 85%min 88%
-9mm,+6.35mm 7.00%max 4%
-5mm 5%max 4%

Tumbler test (ASTM)

   
Tumble index (+6.35 mm) 94.00 % min 95%
Abrasion index (+ 0.6 mm) 5.00 % max 4%
Metallurgical Properties
  Specification Typical
Swelling (JIS) 20% max. 18%
Compression Strength 250 KG/PELLET min 260
Porosity 25.00 % min 26%
Reducibility (JIS) 60% min 62%

Note: Above are indicative specifications only, Specific customer requirements can be accomodated.

Quality Specification of Kudremukh Pellet - Direct Reduction Grade:

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             Chemical Quality


Parameter Specification Typical
Fe 66.50% min 66.80%
SiO2+Al2 O3 3.10% max 3.00%
Al2 O3 0.60% max 0.55%
Na2O 0.05% max 0.025%
K20 0.05% max 0.025%
TiO2 0.10% max 0.10%
Mn 0.10% max 0.08%
P 0.04% max 0.03%
S 0.02% max 0.01%
Basicity
CaO/SiO2 0.50
Moisture (free moisture loss at 105 degree centigrade)
4% max (fair season) 6% max (monsoon)
Physical Quality
Screen Analysis Specification Typical
mm 5%max 4%
-16mm ,+9mm 85%min 88%
-9mm,+6.35mm 7.00%max 4%
-5mm 5%max 4%

Tumbler test (ASTM)

   
Tumble index (+6.35 mm) 94.00 % min 95%
Abrasion index (+ 0.6 mm) 5.00 % max 4%
Metallurgical Properties
  Specification Typical
Swelling (JIS) 20% max. 18%
Compression Strength 250 KG/PELLET min. 260
Porposity 25.00 % min. 26%
Reducibility (JIS) 60% min 62%


               Note: Above are indicative specifications only, Specific customer requirements can be accomodated.


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