Iron ore Constituent hip-l sizing Fe ( calcined) 66.60% size fraction wt % Fe (natural) 64.70% +40 mm 0 Sio2 2.65% -40 + 31.5 5 Al203 1.35 -31.5 + 25 12 Mn .24 -25 + 20 14 P 0.060 -20 + 15 19 S 0.013 -15 +12.5 11 Loi 2.79 -12.5 + 10 15 H2o free moisture 2.8 -10 + 8 11 Tio2 0.05 -8 + 6.3 9 Cao 0.05 -6.3 4 Mgo 0.11 total 100 40, 000 mt - 200, 000 mt