7/21/2019 Feeder Calcultaion

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4/19/2013

bropcal2.an2x

Horacio

Nelson

Material

Description Aggregate

Density 3100.0kg/m^3 Angle of Repose 40.0Deg

Effective Angle of Internal Friction 40.0Deg

 Arching Angle 75.0Deg

Skirtboard Friction Angle 22.0Deg

Hopper 

Shape Planer FlowMaterial Not Specified

Opening

Length 4.20m

Width at Exit 0.87mWidth at Entrance 0.87m

Height at Exit 0.22mHeight at Entrance 0.03m

Divergence Angle 0.0Deg

Height 3.15m

Side Half Angle 60.0Deg

Effective Friction Coefficient 0.84

Release Angle 2.45Deg

Surcharge Effective Heightat Transition 0.00m

Bin

NO bin included.

Surcharge

NO bin included.

Conveyor 

Belt Width 1050mmBelt Speed 0.25m/sec

Design Capacity 500mtph

Feeder Section Length 6.00mFeeder Section Slope 0.0Deg

Skirtboard In ExtendedHopper Section

Length 4.20 1.80m

Height at Exit 0.22 0.22mHeight at Entrance 0.03 0.22m

Width at Exit 0.87 0.87mWidth at Entrance 0.87 0.87m

Divergence Angle 0.0 0.0Deg

Material UHMW

Pressure Ratio 0.22 0.22[initial]Pressure Ratio 0.22 0.22[flow]

Effective Friction Coefficient 0.40 0.40

Idlers Carry

Specification CEMA5Description E6

 Angle 0DegRoll Diameter 152mmNo of Rolls 1Bearing Type Roller  

Misalignment 1.588mm

Rotating Weight 30.6kgDrag 0.316NRating 4448N

Spacing 0.30m

 Actual Load [Running]6,618NCalculated Idler Load [Running]6,683N

RPM 31L10 Life 246,819hrs

Belt

Belt Weight 24.7kg/m

Cover Material Rubber  

7/21/2019 Feeder Calcultaion

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4/19/2013

bropcal2.an2x

Horacio

Nelson

Feeder Section Properties

Estimated Feed Rate 498mtph

Discharge Opening

Opening Height 0.219mOpening Width 0.870m

Effective Height 0.205m

 Actual Cross Section Area 0.191m2Effective Cross Section 0.179m2

Feeder Section Forces [initial] [Running]

Material Shear Force Calculation Method:CEMAConveyor Friction Calculation Method:CEMA Standard (5th)

Material Vertical Force 349,913 90,169N

Material Shear 293,612 75,661NMaterial Acceleration 0 35NMaterial Elevation 0 0N

Idler Friction - Hopper 940 699NIdler Friction - Extended 400 400N

Skirtboard - Hopper 8,653 2,230NSkirtboard - Extended 658 658N

Total Resistance 304,263 79,682N

Required Power 21kW