KamengoU is a library of videos and whitepapers geared to teaching designers and engineers the physics and theory governing good bin and feeder design. We want you to understand the “why” behind your problem so that you can understand the “why” behind our solution.
SUMMARY VIDEOS
SUMMARY VIDEO | WHY BINS PLUG
The three root causes of bin plugging: 1) poor bin geometry, 2) compaction by the feeder, and 3) uneven discharge.
Material flow properties and good bin geometry in plain English.
Mass flow and funnel flow
Effective discharge area
SUMMARY VIDEO | THE SIX DECISIONS OF GOOD BIN AND FEEDER DESIGN
Six key design decisions to ensure your storage bin can discharge using gravity:
Flow pattern
Bin shape
Discharge outlet
Angle of sloping walls
Liner on sloping walls
Effective discharge area
SUMMARY VIDEO | THE KAMENGO FEEDER
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SUMMARY VIDEO | KAMENGO WHITEPAPER: DESIGN OF RELIABLE BINS AND FEEDERS
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SUMMARY VIDEO | KAMENGO LABS PART I
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SUMMARY VIDEO | KAMENGO LABS PART II
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THE BASICS
THE BASICS | THE PHYSICS OF FLOW PROPERTIES
How gravity and friction determine a bulk solid’s flow pattern during discharge.
Mass flow and funnel flow
THE BASICS | DESIGNING FOR MASS FLOW: BIN ANGLE
Determining the minimum bin wall angle to achieve a mass flow discharge pattern
Wall friction angle
The role of the shape of the bin
THE BASICS | DESIGNING FOR MASS FLOW: DISCHARGE OUTLET
The Bridging Dimension: the minimum discharge outlet needed to ensure that the force supplied by gravity is sufficient to prevent chronic bridging over the feeder
Effective discharge area and the importance of a “fully-effective” Feeder.
THE BASICS | DESIGNING FOR FUNNEL FLOW WHEN HANDLING A DIFFICULT FLOWING MATERIAL
The Piping Dimension: the minimum discharge outlet needed to ensure that the force supplied by gravity is sufficient to prevent chronic rat-holing over the feeder.
Effective discharge area and long and wide openings
THE BASICS | STRENGTHS AND WEAKNESSES OF MASS FLOW AND FUNNEL FLOW
Shallow storage bin
Lower bin wall pressures
Natural liner
First-in, last-out flow pattern
Minimum effective discharge outlet can be very big
Need to fully empty on a regular basis Mass Flow:
First-in, first-out discharge
Minimum discharge outlet is reasonable
Taller bin with higher bin wall pressures and more abrasion along bin walls
More expensive
Require a fully-effective discharge outlet
THE BASICS | EFFECTIVE DISCHARGE AREA AND MINIMUM OUTLET
Material compacts into arches as it descends down a converging storage bin
The arch over the Feeder is both the weakest but also the most susceptible to becoming stable – which results in bridging over the Feeder.
The span of the arch: ensuring gravity will reliably keep material flowing
Effective outlet / effective discharge area and the behavior of the Feeder
THE BASICS | EFFECTIVE DISCHARGE AREA AND MASS FLOW
As soon as you interrupt the flow of material from any part of the discharge outlet, the flow pattern switches to funnel flow regardless of the bin geometry.
ADVANCED TOPICS
ADVANCED TOPICS | EXPANDED FLOW
Combining mass flow and funnel flow to design large storage tall bins and pile reclaim systems
ADVANCED TOPICS | MATERIAL FLOW TESTING: DETERMINING MINIMUM ANGLE FOR MASS FLOW
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ADVANCED TOPICS | MATERIAL FLOW TESTING: DETERMINING MINIMUM ANGLE FOR MASS FLOW
Shear Test, Aperture Test and Bulk Density Test
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ADVANCED TOPICS | DETERMINING CHUTE ANGLES
SLIDE ANGLE TEST
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ADVANCED TOPICS | AT SCALE TESTING: OVERCOMING THE LIMITS OF MATERIAL BENCH SCALE TESTING
Material flow testing does not always show the most cost-effective bin geometry for handling a bulk solid. At-scale testing is a useful tool to fill this gap.
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ADVANCED TOPICS | FEEDER LOADS
Fill load
Flow load
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WHITE PAPERS
THE DESIGN OF RELIABLE STORAGE BINS AND FEEDERS
for the Mining Industry