Removal / Transportation Of Spoil By Conveyor: The size and location of the conveyor are critical to production and should be sized according to the most critical peaks in excavation.
- There are the following parameters to select...
Max excavation per hour
185 m3/hr
Assume belt size
600 mm
Assume conveyor trough angle
20 degrees
- From the above you read off specific parameters from the suppliers table...
Recommended belt speed
150 m/min
Angle of repose for dry sand
35 degrees
Angle of surcharge
20 degrees
- You must then read off, from the manufacturers tables the conveyor capacity...
Cross-sectional area of load
0.02979 m2
At a speed of 150 m/min gives
268 m3/hr
- Assume a bulking factor for excavated sane = 15%, and assume 50 minutes work per hour to allow for blockages and maintenance etc...
- 268 x 85% x 50/60 = 190 so therefore capacity of conveyor = 190 m3 per hour = OK.
Hong Kong Airport Express Station conveyor was capable of 11,500 m3/week.