| Bulk cargo name | Specification | Density bulk densityγₘ (t/m³) | Natural slope angle α_B (°) | Bulk cargo name | Density bulk density γₘ (t/m³) | Natural slope angle α_B (°) |
|---|---|---|---|---|---|---|
| Iron ore | Chunks | 2.0~3.5 | 0~15 | cement | 1.6~1.8 | 0~10 |
| Iron ore | Fine grain | 2.0~3.5 | 20~60 | Phosphate | 1.0~1.8 | 0~15 |
| Coal | Fine grain | 0.8~1.0 | 30~60 | sand | 1.6~1.8 | About30 |
| Lignite | Fine grain | 0.7 | 约20 |
Figure As Follows Relationship curve between η_g and η_gmax particle sizes
