tonnes for truck and container movements. This process
for the wider community and OH & S issues. In order to meet
competitive load rates.
Systems Ltd (dust-suppression hoppers). Installation and use of
resulted in significant reduction of fugitive dust emissions. This
from loading operations to zero.
increased loading rate. The new system has been embraced by
all parties and now constitutes standard practice. This project
Zealand. Ravensdown’s lower North Island project manager
dust fallout, improved visibility and provides the perfect pour.
“We use the dust-suppression hopper on
our load-out points; truck and rail and also
the dress belt into store, a drop of about 14
“The hoppers have been a great success
in cutting down the dust problem and make
visibility a lot easier and provide a perfect
pour when loading.
“Not only are we happy, but truck drivers
and transport companies are thrilled as
there’s less debris over their trucks,”
He endorses the hopper and says it could
easily be adapted for other bulk loading
Trevor Schwass, technical director, says
the system is now also successfully used for a
variety of dry, granular, free-running products including fertilizers,
stock foods, wheat, barley, sugar, sand and lime.
“As clients demand unique solutions, we endeavour to
develop the system for transferring specific products. The
development of larger hoppers means we can now service
clients with larger loading rates and also handle barge and ship
Lisa Brickey of Mosaic Crop Nutrition, Savage, Minnesota,
“We bought our first DSH hopper in 2007 and now have
four more installed. The DSH System allowed us better control
over our dust. The system requires no air, hydraulics or
electricity. There is no waste dust stream to handle and our
load out rate was not impacted at all. We had our first spout up
and running in 30 minutes!
“I had my doubts when I first saw the before and after
photos, but the system really does work that well! We love it!”
HOW DOES THE HOPPER WORK?
A small degree of natural agitation as the
hopper is filled helps exclude air from the
material being transferred. At the point of
loading or transferral, the DSH System
concentrates the discharge of dry goods as
a tight solid column through free air into
any target repository including trucks, rail
cars, ships, storage containers, bags or
stockpiles. Loading can be continuous
without plant interruption.
DSH Systems produces seven hopper
sizes manufactured from polyethylene, steel
and stainless steel to cover most
applications. Due to international demand,
the company is constantly researching and
developing systems to enable the efficient
transfer of a wider range of products.
ACADEMIC TESTIMONIAL HIGHLIGHTS BENEFITS
Academic interest from international universities and consultants
continues to expand upon the research and science behind this
Associate Professor Peter Wypych, Centre for Bulk Solids and
Particulate Technologies, University of Woollongong, Australia
states: “The DSH Systems Ltd dust-suppression hopper can
achieve major reductions in fugitive dust emissions and also dust
explosion hazards. It will be a very useful tool for many bulk
handling engineers and technicians”.
DSH Systems exhibited at Powtech in Nuremburg in April
2010 with the intention of increasing its distribution network
into the northern hemisphere. Distributors have now been
appointed in the UK and Ireland and the Benelux region and
discussions are ongoing with other interested companies