Materials

Composition, (wt %)

Al₂O₃

SiO₂

Fe₂O₃

TiO₂

MgO

CaO

Na₂O

K₂O

L.O.I

MnO

Ukpor clay

27.79

53.73

1.24

0.55

0.89

0.01

0.56

2.10

13.16

-

Osiele clay

30.31

51.73

1.46

0.07

0.31

0.16

0.62

2.31

13.06

-

Kankara clay

25.72

58.84

0.86

0.34

0.69

0.24

0.35

1.44

11.52

-

Coconut shell

1.92

2.46

0.24

-

0.11

0.15

0.20

0.13

93.47

0.03