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Mining
• Materials handling systems for nickel ore
• Materials handling systems for coal
• Materials handling systems for alumina
• Continuous centrifugals for magnesium
• Design review of Dragline Boom & Tristructure
• Materials handling for mineral sands
• Design review of mine development
• Mine dewatering
• ACID Storage tank
Defence
• Gun Tractor Project – design of material modules for the Australian Defence Force
• Design of personnel modules, stores modules, stores & ammunition modules
• Overlander Project – design of materials modules
Energy
• Engineering support for the specification of an ethanol plant
• Layout for thermal power station
Sugar
• Design of materials handling equipment for Tay Ninh 2500TCD raw sugar mill
• Quang Nam and Kien Giang 1000TCD white sugar factories
• Preparation and milling
• Bagasse handling and storage systems
• Tanks and vessels for juice heating and clarification
• Centrifugals
• Water utilities and reagent systems
• Design of milling train and bagasse storage system for Thoi Binh 1000TCD white sugar factory
• Design and development of continuous centrifugals
• Design and development of new concept bagasse storage and handling systems
• Engineering support for the specification of an ethanol plant
• Design of sugar dryer
Transport
• Design of curtain side modules for rail
• Design of 44ft double stacker curtain side modules
• Design of flat racks
• Design of skid frames
• FEA of barge
Agriculture
• Design of grain dryer chassis
• Design of air seeder
• Design of broadacre tillage equipment
• Design of sugarcane tillage & planting equipment
Other Industries
• Tank design in steel, stainless steel, rubber, brick lined steel and FRP (fibreglass)
• Clam shell bucket design
• Tri-axial stress test rig design including unique urethane in situ cast skeleton seal
• Unique double hinge door system for large capacity cooling towers
• Hydraulic systems design
• Design of emergency tertiary braking device
• Design of a hydraulically operated rod mill liner-handling machine for an ALUMINA refinery
• Sheet piping hammer head
DEM (Discrete Element Analysis)
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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