Table 5.
Proximate and ultimate analyses of the commercial reducers and the bioreducers (750 °C and 3 °C·min−1).
| Dry Basis (wt %) | Commercial Reducers | Bioreducers | ||||
|---|---|---|---|---|---|---|
| Metallurgical Coke | Petroleum Coke | Anthracite | Olives | Eucalyp. | ||
| Moisture | 11.4 (<20) | 6.4 (<20) | 18.0 (<20) | 1.7 | 1.4 | |
| Proximate analysis | Volatile matter | 3.9 (<8.75) | 10.1 (<18.75) | 7.2 (<8.75) | 10.8 | 8.1 |
| Ash | 12.5 (<20) | 2.0 (<20) | 11.2 (<20) | 9.4 | 5.4 | |
| Fixed carbon * | 83.6 | 87.9 | 81.6 | 79.9 | 86.5 | |
| Ultimate analysis | C | 84.4 | 83.5 | 86.6 | 85.6 | 90.9 |
| H | 0.5 | 2.8 | 0.6 | 0.8 | 1.0 | |
| N | 1.0 | 1.3 | 1.0 | 1.2 | 0.8 | |
| S | 0.9 (<3.75) | 5.6 (<3.75) | 0.6 (<3.75) | <0.05 | <0.05 | |
| Others * | 0.8 | 4.9 | 0.0 | 3.0 | 1.9 | |
| HHV (MJ·kg−1) | 29.3 | 35.9 | 31.1 | 29.5 | 31.6 | |
* By difference; ( ) In brackets Befesa specifications on dry basis.