Table 2 Major functional constituents in untreated and processed coal samples.
The fitting way | Region | Raw coal | 0.05 wt%SAS60 | 0.05 wt% SAS60 and 1.0 wt%Na2CO3 | |||
|---|---|---|---|---|---|---|---|
Wave area | Percentage /% | Wave area | Percentage /% | Wave area | Percentage /% | ||
Gaussian | A | 17.81 | 32.21% | 23.63 | 37.81% | 28.25 | 31.31% |
B | 1.55 | 2.80% | 1.68 | 2.69% | 4.12 | 4.57% | |
C | 33.60 | 60.77% | 34.11 | 54.58% | 51.35 | 56.92% | |
D | 2.33 | 4.21% | 3.07 | 4.91% | 6.50 | 7.20% | |