Table 2 Ash analysis of raw coal.

From: Experimental study of the catalytic effect of iron on low-rank coal gasification

MgO

Al2O3

SiO2

SO3

Na2O

3.62

21.26

52.47

7.91

0.47

K2O

CaO

TiO2

MnO

Fe2O3

1.23

7.76

0.66

0.09

4.51

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