Table 3: Chemical composition of (W.M.) from DR companies.

Waste material

Fe %

CaO %

SiO2 %

Al2O3 %

MnO %

Alkalis %

Oxide fines

67.80

0.80

1.10

0.16

0.10

nil

Sludge

68.10

1.20

1.80

0.16

0.20

nil