Types of coal

Elemental composition

Calorific value

(kJ/kg)

M_ar

A_ar

C_ar

H_ar

O_ar

N_ar

S_ar

Blind coalin JingXi

5.0

22.8

67.9

1.7

2.0

0.4

0.2

23,040

Blind coal in YangQuan

5.0

19.0

68.9

2.9

2.4

1.0

0.8

26,400

Soft coal in DaTong

3.0

11.7

70.8

4.5

7.1

0.7

2.2

27,800

Soft coal in XinWen

6.0

18.8

61.0

4.1

6.8

1.4

1.9

25,140

Soft coal in XuZhou

10.0

13.5

63.0

4.1

6.7

1.5

1.2

24,720

Midding coal in LongFengXi

15.0

29.8

42.9

3.4

7.5

0.9

0.5

16,760

Lignite in FengGuang

22.0

25.7

35.2

3.2

12.6

1.1

0.2

13,410