Official Journal of the Japan Wood Research Society
Table 2 Hammer mill performance and product characteristics of hammer-milled batches, FHRs-1, FHRs-2, and FHRs-3
From: Energy consumption of two-stage fine grinding of Douglas-fir wood
Parameters | Wood chips | Forest Harvest Residuals (FHRs) | ||
|---|---|---|---|---|
FHRs-1 | FHRs-2 | FHRs-3 | ||
Geometric mean diameter (mm) | 10.36 | 7.81 | 7.81 | 7.81 |
Sample weight (kg) | 37 | 344 | 235 | 109 |
Feed moisture content (%) | 11 | 8.2 | 9.7 | 10.9 |
Screen size (mm) | 0.69 | 0.69 | 3.175 | 12.7 |
Corrected SEC, (kWh/kg OD) | 0.25 | 0.19 | 0.066 | 0.019 |
Net SEC (kWh/kg OD) | 0.17 | 0.14 | 0.048 | 0.014 |
Product median size (µm) | 229 | 270 | - | - |
Geometric mean diameter (µm) | 295 | 316 | 669 | 1618 |
Throughput (OD kg/h) | 180 | 145 | 446 | 397 |