DSH presentation
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Transcript of DSH presentation
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DSH Systems Ltd.New Dust Suppression technology for bulk out-loading
www.dshsystems.com
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History
Invented by: Trevor Schwass New Zealand
Sold worldwide, Patented and Insured.
Approved supplier worldwide to: Cargill,
Sibelco/Unimin, ADM.
Research on DSH being studied by University
Agencies now covering 15 countries
Fertiliser180TPH, 14.5m drop
Before DSH
After
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What is a Dust Suppression Hopper?
Blue Circle
Sand by-product
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Dust Suppression Hoppers in use
UK Quarry - Limestone
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Dust Suppression Hoppers in use
Compass Utah - Salt
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How it works
``The central plug is fixed in position,
with a gap between plug & hopper
Hopper is loaded with material
Springs extend, lowering hopper
and controlling material flow
A solid column of material exits
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Why does it work?
``Head of material excludes air from
the material
Solid column of material exits
Dust is entrained in the column
The solid column of material is
tolerant of fall height
As it lands minimal dust is released
Little or no material segregationoccurs
Amazing!
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Does it work with all products?
Like all equipment the DSH hopper has its limitations:
Fine, moist, non-granular, poor flowing materials do not generally
work (cement, milk powder, coal, flour, icing sugar)
The material feed rate needs to be fairly constant, wild
fluctuations cause instability in the material column
Its not 100% dust-free - minimal dust created at start-up
and very small amounts of dust created during operation
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Components of a DSH System
Frame
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Plug Support
Plug
Hopper
Chains
Springs
Plug Rod
Adjustor
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Summary - BenefitsUsed for Dry free flowing materials:
Fertilisers, Cereals, Soybean, Sand, Sugar, Gravel,
Limestone, Wood, Crushed coke, DDG,MAP
Minimal maintenance: no electrical connections, no
services required, no need to raise or lower the hopper
No dust extraction system required
Reduce maintenance and cleaning costs
The dust is sold with the materialits entrained in the
flow
Segregation on discharge & landing is almost
eliminated
Increase capacityless air = more product
Safer working environment for your staff
Reduce the risk of dust explosions
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The Dust Suppression Hopper
We Care About Your Air!
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