Bulk Materials Characteristics
This article introduces the main characteristics of commonly used bulk materials, especially the density and repose angle that need to be considered in the design of stockyard and bulk handling equipment.
| Bulk Materials | Density （t/m3） |
Static Repose Angle (°) |
Recommended Static Repose Angle (°) |
Recommended Density (t/m3) |
|---|---|---|---|---|
| Iron Ore | 2.20~2.85 | 35~45 | 37 | 2.3 |
| Iron Concentrate | 1.6~2.5 | ~40 | 37 | 2.3 |
| Agglomerate | 1.7~2.0 | 40 | 36 | 1.8 |
| Sintered Ore Powder | 1.7~2.0 | 40 | 37 | 1.8 |
| Pellet | 2.0~2.2 | ~28 | 28 | 2.2 |
| Anthracite Coal | 0.75~1.0 | 27~45 | 37 | 0.8 |
| Bituminous Coal / Coking Coal | 0.75~1.0 | 35~45 | 37 | 0.8 |
| Thermal coal | 0.75~1.0 | 35~45 | 37 | 0.8 |
| Coke | 0.45~0.50 | 35~45 | 35 | 0.5 |
| Powdered Coke / Broken Coke | 0.45~0.55 | 35~45 | 37 | 0.55 |
| Blast Furnace Slag | 0.6~1.0 | 35~50 | 36 | 1.0 |
| Limestone | 1.2~2.0 | 37~45 | 37 | 1.6 |
| Dolomite | 1.2~2.0 | – | 35 | 1.6 |
| Serpentine | 1.2~2.0 | – | 36 | 1.4 |
| Quicklime | 0.55~1.3 | 40~45 | 40 | 1.1 |
| Fluorite | 1.6~1.7 | 36 | 36 | 1.6 |
| Silica | 1.6~1.7 | 36 | 36 | 1.6 |
| Sinter | 1.9~2.6 | 36 | 36 | 2.5 |
| All-iron Blended Ore | – | – | 37 | 2.3 |
| All-material Mixed Ore | – | – | 37 | 2 |
Note: Recommended static repose angle and recommended density in above table are recommended values for the design and calculation of raw material stockyard.
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