Grit material specifications (a) indicative chemical analysis Fe total 30 - 35% Feo 34 - 41% Fe203 2 - 7% Si02 32 - 42% Cao 3 - 6% Mgo 3 - 6% Cr203 2 - 3% Al203 3 - 6% Ni 0.10 - 0.20% Specificgravity. 3 - 3.5 gr/ cm3 bulk density 1.5 - 2 gr/ cm3 (b) indicative granulometry Mm % + 2, 3 4 - 8 -2, 3 + 1, 7 7 - 12 -1, 7 + 1, 18 16 - 25 -1, 18 + 0, 85 16 - 25 -0, 85 + 0, 60 16 - 25 -0, 60 + 0, 425 9 - 15 -0, 425 5 - 9 Moisture: upto 10%
