Discrete Element Method is a technique used for the simulation and analysis of particle flow situations providing information on particle kinematics, momentum, heat and mass transfer.
For the Abbot Point Bucket Wheel Reclaimer project Haald has used EDEM discrete element particle analysis software to model the flow of material through the Reclaim components with the aim of optimising the chute design.
Simulations to optimise geometry were carried out with the bucket wheel operating in the horizontal position:
DEM simulation of the original equipment Simulations to optimise geometry were carried out with the bucket wheel operating in the horizontal position.
Analysis output shows the flow path of arbitrarily selected particles. Other particles are disrupted by these and detach from the face. General belt loading is not particularly even and material spray can often be observed.
DEM simulations with the improved performance Analysis output again of arbitrary particles, shows the final layout gives fast moving product down the slope face, without compromising load distribution.
Result Based on the outcomes of analysis carried out in EDEM the geometry has been optimised within the constraints of allowable and practical modifications.
In addition to improved flow behaviour the redesign has allowed the incorporation of several useful qualities - such as the adjustable deflector, which can be configured both manually and by the linear actuator.
The design is suitable and functional in both stack and reclaim operations, and is generally optimised for the reclaim scenario.
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