Transfer chute flow analysis uses computer simulation to show how bulk material will move through a chute before the chute is built or changed. It helps find where material will build up and block, where liners will wear fastest, and where spillage is likely. For a port or bulk handling site, that means fewer surprises after commissioning, when fixing a chute is slow and expensive.
This post explains the idea in plain English for operations and asset managers, and covers the part that often gets overlooked: the operating data that makes the results reliable, and the data you need afterwards to check the chute is doing its job.
Why transfer chutes cause so much trouble
A transfer chute looks simple. It's a steel channel that guides material from one conveyor to the next, or from the last conveyor into a stockpile, bin or ship's hold. But when chutes go wrong, they stop the whole line.
Common problems include:
- Blockages. Wet or sticky material builds up in corners and dead spots until the chute chokes.
- Wear. Material hitting the same spot at speed wears through liners, which then need replacing.
- Spillage and dust. Material that leaves the belt off-centre spills, and fines become airborne.
- Belt damage. Material landing badly on the receiving belt causes wear and tracking problems.
When a chute blocks on a ship-loading line, the whole line stops. Crews have to clear it safely, and a vessel may wait at berth.
Why rules of thumb aren't always enough
Chutes used to be designed mostly from experience and rules of thumb. That works well when the material stays the same. It works less well when:
- the site handles several products with different particle sizes and moisture,
- weather changes how material behaves, especially in wet seasons,
- throughput is being increased beyond what the original chute was designed for, or
- a new conveyor layout means material arrives at a different speed or angle.
A chute that handles dry product well can block regularly when the same product arrives wet.
How the simulation works
The most common method is called discrete element modelling, or DEM. In plain terms, the computer models material as a very large number of individual particles and works out how each one moves, collides and slides as it falls through a 3D model of the chute.
To do that, the model needs to know:
- the shape and dimensions of the chute and the conveyors feeding it,
- belt speeds and the rate material is moving (throughput),
- particle sizes and how they vary, and
- how the material behaves, including moisture, stickiness and how it flows against steel and liners.
The output shows where material speeds up, slows down or stops. Engineers can then change the chute shape, add or move liners, or adjust flow aids, and rerun the model until the problem areas are gone. It's a virtual test before any steel is cut.
The results are only as good as the inputs
This is the part that often gets less attention than it deserves. A simulation of the wrong material, or the wrong throughput, gives a confident answer to the wrong question.
Good inputs come from good operating data:
- Throughput records. Actual tonnes per hour, including peaks, not just the design figure.
- Product records. Which products pass through the chute, how often, and in what conditions.
- Moisture and weather. How wet the material is at different times of year.
- Stoppage and maintenance history. Where and when blockages happened, and how often liners were replaced.
At many sites this information sits in several places: weighbridge systems, control system logs, maintenance software and spreadsheets. Pulling it together before a chute study saves time and makes the results much more trustworthy.
Checking the chute after it's built
Once a new or modified chute is running, the same data shows whether it's working. Are blockages less frequent? Are liners lasting longer? Is the line holding its loading rate in wet weather? Without that data in one place, the answer is often a matter of opinion.
Where Kenomont fits
We have built transfer chute flow simulations ourselves: modelling how material moves through a chute, showing where it builds up or wears, and testing changes in the model before anything is fabricated. The final chute design, fabrication and sign-off stay with your engineers. Alongside the simulation work, we've built and supported a woodchip export port management system for Australian forestry export companies since 2012, including real-time weighbridge integration and executive reporting dashboards.
That experience is directly relevant to chute and conveyor work: getting throughput, product, weighbridge and maintenance data out of separate systems and into reports that operations managers and engineers can rely on. See our forestry industry page and business intelligence and reporting for more.
Frequently asked questions
What is transfer chute flow analysis?
It's a computer simulation of how bulk material moves through a transfer chute. It shows likely blockages, wear points and spillage before a chute is built or modified.
What is DEM?
DEM stands for discrete element modelling. It models bulk material as many individual particles and calculates how they move and collide inside a 3D model of the chute.
What information is needed for a chute flow study?
The chute and conveyor geometry, belt speeds, actual throughput, particle sizes and how the material behaves, especially when it's wet. Real operating records make the results much more reliable than design figures alone.
Can simulation fix an existing chute that keeps blocking?
It can show why it blocks and test changes before you make them, such as a different shape, new liners or flow aids. We can run that simulation for you; the final design, fabrication and sign-off stay with your engineers.
Does Kenomont do chute flow simulation?
Yes. We build flow simulations of transfer chutes to show where material will block, spill or wear, and to test changes before they are made. The final design, fabrication and sign-off rest with your engineers. We can also bring your weighbridge, throughput and maintenance data together so you can see how the chute performs once it's running.
Talk to us about a chute or your operating data
If you have a chute that blocks, spills or wears faster than it should, or your throughput and maintenance data is spread across separate systems, we can help: a flow simulation to test changes before you make them, and your operating data in one place so everyone works from the same numbers. Book a free initial chat, call 1300 470 091 or email [email protected].