Table 1 Industrial analysis of oxidized lignite.

From: Multiscale characterization of microstructural reconfiguration induced by oxidation in lignite from the Lingquan mining colliery

Serial number

Oxidation temperature

(℃)

Industrial analysis (%)

Tendency of spontaneous combustion

Mad

Aad

Vad

FCad

RC

0

3.59

35.96

27.26

33.19

II

A

50

3.44

36.31

26.56

33.69

B

100

2.35

36.81

26.39

34.45

C

150

2.65

37.67

24.60

35.08

D

200

1.97

41.68

20.02

36.33

  1. Note: Mad—a mass fraction of the moisture of the air-dry base, %; Aad—a mass fraction of the ash of the air-dry base, %; Vad—a mass fraction of the volatile fraction of the air-dry base, %; FCad—a mass fraction of the fixed carbon of the air-dry base, %.
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