Conveyor Slopes
Reference data and engineering information about conveyor slopes for mechanics applications.
Overview
Engineering reference data for Conveyor Slopes in mechanics.
Key Formulas
Newton's Second Law
Force = mass × acceleration.
Work
Work = force × displacement × cos(angle).
Kinetic Energy
Energy of motion.
Potential Energy
Gravitational potential energy.
Variables
| Symbol | Description | Unit |
|---|---|---|
| Force | N | |
| Mass | kg | |
| Acceleration | m/s² | |
| Velocity | m/s |
Maximum Conveyor Slope Angles
Material | Maximum Slope(°) |
|---|---|
| Acid phosphate | 13 |
| Alum | 22 |
| Alumina - sized or briquette | 10 |
| Aluminum sulphate | 17 |
| Ammonium chloride | 10 |
| Ammonium nitrate | 23 |
| Anthracite coal | 16 |
| Asbestos ore rock | 18 |
| Asbestos shred | 30 |
| Asphalt | 30 |
| Bauxite - ground dried | 23 |
| Bauxite - mine run | 17 |
| Beans | 7 |
| Borax | 20 |
| Carbon black, pelleted | 5 |
| Cement - Clinker | 20 |
| Cement - loose | 22 |
| Chalk < 100 mesh | 28 |
| Clay - dry lump loose | 21 |
| Coal - bituminous slake | 20 |
| Coal - run of mine | 18 |
| Coke - screened | 18 |
| Concrete - 6 inch slump | 12 |
| Concrete - 4 inch slump | 20 |
| Concrete - 2 inch slope | 25 |
| Corn, shelled | 10 |
| Earth - loose | 20 |
| Earth - moist | 19 |
| Flour | 16.5 |
| Gravel - sized & washed | 12 |
| Gravel - unsized | 19 |
| Gypsum - ground | 27 |
| Iron ore - limonite | 28 |
| Kaolin - pulverized | 32 |
| Lime - fine | 29 |
| Limestone - pulverized | 34 |
| Mica - ground | 23 |
| Packages - wrapped on ribflex belts | 35 |
| Sand - dry | 16 |
| Sand - damp moist | 20 |
| Shale | 26 |
| Sugar, raw cane | 22 |
| Vermiculite, expanded | 23 |
| Woodchips | 27 |
Source: engineeringtoolbox.com
Slope & Angle Relationships
The slope of a conveyor can be described in three common ways. Let be the vertical height gained and be the horizontal distance traveled.
1. Slope Ratio (S): This is a dimensionless ratio (e.g., 1:4).
2. Grade (G): Expressed as a percentage (e.g., 25%).
3. Slope Angle (θ): The angle of inclination relative to the horizontal is calculated using the inverse tangent function.
Tools & Resources
For practical estimation, an Inclination Chart is often used. To use it:
- Measure the horizontal run and vertical rise of your conveyor installation.
- Use these values to find the corresponding angle on a pre-drawn slope chart.
Download or print a standard inclination chart from engineering references for field use.