Table 4 Energy spectrum analysis of tailings sand under different acidification and oxidation degree.

From: Micro-structure and morphology of tailings sand under different oxidation and acidification degree

Element

Oxidation degree 0%

Oxidation degree 25%

Oxidation degree 50%

Oxidation degree 75%

Oxidation degree 100%

Mass ratio

Atomic ratio

Mass ratio

Atomic ratio

Mass ratio

Atomic ratio

Mass ratio

Atomic ratio

Mass ratio

Atomic ratio

O

25.51

28.67

25.13

42.47

40.49

52.52

45.19

55.76

55.73

63.93

Si

3.07

2.51

5.93

5.71

15.76

11.65

33.55

21.92

44.80

31.49

AI

4.00

3.07

1.94

1.95

1.19

0.87

1.15

0.91

0.41

0.28

Fe

28.21

10.78

21.90

10.60

5.77

2.14

1.18

0.42

1.06

0.35

Mg

1.44

0.77

0.61

0.42

0.41

0.21

0.30

0.16

0.13

0.06

Ca

12.40

8.40

6.20

4.20

2.60

1.40

2.30

1.20

1.90

1.00

C

24.01

42.64

12.16

21.01

8.66

13.23

7.14

16.08

6.65

10.92

S

20.93

13.93

11.8

9.95

6.33

4.10

0.32

0.2

0.32

0.2

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