Table 1 Chemical compositions and physical properties of raw materials.

SiO₂

16.91

3.87

32.54

53.73

Al₂O₃

3.95

9.63

13.34

20.05

Fe₂O₃

3.12

0.78

0.45

5.57

CaO

57.85

48.89

42.28

3.36

MgO

1.66

0.65

2.52

0.91

K₂O

1.24

0.20

0.56

1.45

Na₂O

0.23

–

0.21

0.96

TiO₂

0.25

0.44

0.57

0.98

MnO

0.20

–

0.24

0.07

P₂O₅

0.46

0.42

–

0.26

SO₃

1.71

16.41

2.09

0.45

SrO

0.06

0.06

0.06

0.10

Physical property

 Density (kg/m³)

319

278

287

210

 Surface area (m²/kg)

3880

4630

4280

3480