Table 2. Proximate Analysis and Density Measurements for the Coals.
| sample | size (mm) | moisture (%) | dry volatile matter (%) | fixed carbon (%) | dry ash (%) | bulk density (g/cm3) | tapped density (g/cm3) | particle density (g/cm3) | buoyancy density (g/cm3) |
|---|---|---|---|---|---|---|---|---|---|
| Antioquia | <6 | 7.8 | 41.9 | 45.1 | 13.0 | 0.79 | 0.89 | 1.40 | |
| 6–19 | 8.0 | 44.6 | 47.1 | 8.3 | 0.64 | 0.67 | 1.59 | ||
| >19 | 9.1 | 49.0 | 46.5 | 4.5 | |||||
| Cundinamarca | <6 | 1.9 | 34.9 | 48.1 | 16.9 | 0.71 | 0.82 | 1.39 | |
| 6–19 | 2.1 | 35.7 | 50.2 | 14.1 | 0.57 | 0.62 | 1.27 | ||
| >19 | 1.6 | 37.4 | 51.4 | 11.2 | |||||
| Patia | <6 | 4.6 | 34.9 | 38.6 | 26.5 | 0.76 | 0.86 | 1.47 | |
| 6–19 | 4.2 | 36.8 | 42.0 | 21.2 | 0.56 | 0.64 | 1.37 | ||
| >19 | 4.4 | 46.7 | 47.1 | 6.2 | |||||
| Valle | <6 | 1.6 | 29.2 | 41.5 | 29.2 | 0.76 | 0.84 | 1.57 | |
| 6–19 | 1.1 | 27.7 | 39.0 | 33.3 | 0.62 | 0.68 | 1.14 | ||
| >19 | 1.0 | 36.4 | 26.2 | 37.3 |