logwasher; 165D dry screen; two lattice frame feed conveyors and four TC 4026 conveyors
to achieve the customers desired grades.
Luke Talbot, International Sales Manager for DUO, comments, “We were delighted when
Readymix selected DUO as its preferred supplier for the washplant, which reinforces the success
of our previous projects installed in this market and shows the strength of our reputation in the
region. The new plant has been very well received and will certainly add a new dimension and
increased efficiency to the overall production.”
Ravi adds,“This new plant has replaced an existing barrel type washing plant.The maintenance
costs on the old plant were extremely high, which left it less cost effective for processing.
However, the TWS equipment has much lower maintenance costs, has maximum efficiency
and productivity and allows us to be ultimately more competitive in the market. The newly
designed plant also allows us to get a cleaner, more desirable product.”
Following a recent trip to the Trinidad site, Fergal McPhillips, Sales Manager TWS, comments,
“The plant is effectively addressing Readymix’s problems. It is achieving excellent results by
being much more efficient while generating outstanding commercial output and dealing with
the demands of the construction market.”
The wash plant has been in operation for one month now and Ravi, adds, “We are
extremely impressed and excited about the prospects of this new Terex washplant,
which is currently operating at 200tph. We can firmly say this is the largest project
the company has embarked on for a long time and undoubtedly the most successful in
terms of production. The entire team involved in the project at Readymix (WI) has been
extremely impressed with all aspects of the plant from initial conception through to final
end product, including consultation, engineering, service and aftersales support from
both DUO and TWS.”
Sean Loughran, Director of TWS, says, “The Trinidad sand and gravel washplant is a
demonstration of yet another complex plant offered by DUO and TWS.
“DUO is highly respected within the Trinidad market, having installed a number of other
plants. It is valued not only for high quality products they sell but also for the high quality
products it sells, but also for its high levels of application, technical knowledge and after sales
care and support.”
Ravi Singh adds in conclusion, “What was also particularly appealing is the availability of
spares if required and in addition the direct face to face contact we had with both DUO
and TWS. The level of service was second to none throughout the installation and final
commissioning of the plant.”
be easily adapted to work in gravel applications.
Dewatering screens are fitted to either end
of the machine, which consists of a trough
and two spiral axles, counter rotating to each
other, with exchangeable blades to intensively
scrub the feed material. Friction from this
process breaks down clay conglomerates and
allows scrubbed material to be stockpiled.
Once the aggregates pass through the PS
200R washer, they are discharged onto a
second DUO lattice frame conveyor. These
6mm to 75mm aggregates are delivered
onto a 165D – 2 deck dry screen to achieve
a three-way split: classifying material into the
customers desired grades, six to 10mm, 10
to 20mm and 20 to 75mm. At this point the
wash plant uses settling ponds for its dirty water.
Dirty water from the FM plant, which contains
material below 75 micron (silts/clays), is sent to a
series of ponds. The ponds are set up so that the
silt drops to the bottom and clean water weirs
over the top, producing clean, reusable water.
In the future, it may be possible to incorporate
a Terex water treatment plant to eliminate the
need for ponds altogether.
The entire plant is controlled and monitored
from a central PLC electrical control panel
housed within an ISO 20’ container. The panel
is programmed for automated start up and
shut down sequences and was fully wired and
programmed before leaving the factory.
“DUO and Terex
thoroughly investigated
the product to be
processed; analysing it
thoroughly and from
this, designed a bespoke
plant most suited to our
individual needs.”
