Conveyor Slopes
Maximum conveyor slopes for various materials
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Maximum conveyor slopes for various materials are indicated below:
| Material | Maximum Slope (degrees) |
| Anthracite coal | 16 |
| Cement - loose | 22 |
| Coke - screened | 18 |
| Coke - breeze | 20 |
| Concrete - 6 inch slump (how wet the concrete is - based on the "slump test") | 12 |
| Concrete - 4 inch slump | 20 |
| Concrete - 2 inch slope | 24 - 26 |
| Coal - soft lumps > 4 inches | 15 |
| Coal - soft lumps < 4 inches | 16 |
| Coal - unsized | 18 |
| Coal - soft fine | 20 - 22 |
| Earth - loose | 20 |
| Earth - sluggish | 22 |
| Gravel - sized and washed | 12 |
| Gravel - unsized | 18 - 20 |
| Gypsum powder | 23 |
| Logs - no bark | 10 |
| Ore - larger than 4 inches | 18 |
| Ore - less than 4 inches | 20 |
| Packages - wrapped in paper on smooth belts | 16 |
| Packages - wrapped in paper on ribflex belts or similar | 25 - 45 |
| Salt | 20 |
| Sand - dry | 16 |
| Sand - moist | 20 |
| Sand - uniformly sized foundry high-quality silica sand or lake | 24 |
| Sulphur - powder | 21 |
| Stones - larger than 4 inches | 15 |
| Stones - less than 4 inches | 16 |
| Whole grain | 15 |
| Wood chips | 25 |
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