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Table 2 Element variations of raw and treated ilmenite samples

From: Applicability of carbothermic reduction for upgrading Sri Lankan ilmenite ores: towards converting ilmenite into synthetic rutile by mechanical activation

Elements (wt%)

Raw ilmenite

M1/800

M2/800

M3/800

M4/800

M1/1000

M2/1000

M3/1000

M4/1000

M1/1200

M2/1200

M3/1200

M4/1200

SiO2

3.48

3.46

3.46

3.33

3.44

3.71

3.63

3.60

3.59

4.59

3.94

3.88

3.90

TiO2

49.18

47.28

46.57

45.60

46.89

48.03

47.23

46.73

47.52

47.70

48.18

47.95

48.03

Al2O3

1.18

1.24

1.11

1.11

1.19

1.27

1.25

1.19

1.28

1.47

1.37

1.36

1.19

Fe2O3 (T)

43.71

42.50

41.85

41.03

42.17

43.03

42.53

41.89

42.58

42.70

42.80

42.62

42.85

MnO

0.85

0.81

0.80

0.78

0.81

1.05

0.82

0.80

0.81

0.83

0.83

0.82

0.83

MgO

0.80

0.78

0.76

0.75

0.79

0.81

0.82

0.81

0.81

0.86

0.86

0.85

0.80

CaO

0.16

0.20

0.18

0.19

0.18

0.21

0.21

0.21

0.20

0.36

0.27

0.24

0.25

Na2O

0.01

0.05

0.05

0.04

0.05

0.06

0.05

0.05

0.05

0.09

0.05

0.05

0.06

K2O

0.03

0.12

0.12

0.13

0.13

0.12

0.12

0.14

0.12

0.20

0.15

0.18

0.15

P2O5

0.09

0.10

0.10

0.09

0.09

0.10

0.09

0.09

0.09

0.09

0.10

0.09

0.10

V2O5

0.21

0.21

0.20

0.21

0.21

0.22

0.21

0.21

0.22

0.20

0.21

0.21

0.21

Cr2O3

0.06

0.07

0.06

0.06

0.06

0.07

0.06

0.06

0.06

0.06

0.06

0.06

0.06

Co3O4

0.01

0.01

0.01

0.01

0.01

0.01

0.01

0.01

0.01

0.01

0.01

0.01

0.01

CuO

< 0.005

< 0.005

< 0.005

< 0.005

< 0.005

< 0.005

0.005

< 0.005

< 0.005

< 0.005

< 0.005

< 0.005

< 0.005

NiO

< 0.003

< 0.003

< 0.003

< 0.003

< 0.003

0.010

0.004

0.005

< 0.003

0.003

0.004

< 0.003

< 0.003

LOI

1.61

1.30

4.03

5.02

2.00

0.02

1.96

2.67

0.78

0.05

0.04

0.06

0.05

Total

101.38

98.13

99.30

98.35

98.02

98.72

99.00

98.47

98.12

99.21

98.87

98.38

98.49