CEN JUL
4
CONSTRUCTION
INTO AFRICA
...AND BEYOND
READYMIX (WI)
is one of Trinidad’s top producers of high quality concrete and related
products and was in need of a new wash plant to replace its existing plant that was challenged
with inefficiencies, maintenance and production issues. Readymix (WI) chose to work with DUO
PLC, which has more than 35 years of industry experience and is also well known within the
Caribbean region. After careful analysis of Readymix’s specific requirements – paying particular
attention to the varied high silt feed material – DUO proposed a custom TerexWashing Systems’
plant that is now effectively processing clay-bound sand and gravel to produce three aggregates
and one grade of sand, while operating at 200 tons per hour.
Readymix (WI) selected a Terex plant over other options specifically owing to the expertise
DUO and Terex offered in the field and the ability to provide a comprehensive sales and
support package. Ravi Singh, Quarry Manager for ReadyMix (WI), comments, “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.
“In addition, they provided a dedicated team of engineers, sales and aftersales technicians
to support throughout the plant installation and commissioning process.” The plant consists
of an H9 feeder; 206R screenbox; FM 200C cyclone; 146 dewatering screen; PS 200R
Terex
in tropical Trinidad
DUO PLC, a Terex
Washing Systems
global distributor
installed a custom-
built Terex
®
sand and
gravel washplant at the
Readymix West Indies
site in Valencia, Trinidad.
The DUO/TWS washplant set up:
Natural clay bound sand and gravel feed
material is first delivered to an H9 feeder
vibrating grid, which removes the 100m+
material. The inclined lattice frame feed
conveyor, which was design and built
by DUO’s manufacturing division, then
delivers the material to our 206R two deck
rinsing screen to get an initial effective
grading. At this stage, the top deck
removes the +75mm material which is
stockpiled using a TC 4026 conveyor.
The bottom deck removes the 6mm to
75mm material, while the material below
6mm is pumped into a FM 200C cyclone,
where a 0 to 6mm instantly salable sand is
produced. The Terex FM 200C cyclone is a
sand recovery unit with a centrifugal slurry
pump, twin hydrocyclones, a collection
Above:
This is one of many TWS plants that
DUO has installed as it continues to show
that it provides a solution for the customer’s
individual needs; a trait achieved through years
of expertise from rich heritage and legacy
companies. Post plant installation, TWS is
committed to providing outstanding customer
support which is realised through its
global distributor network.
tank and a 14x6 dewatering screen. It is
capable of producing one or two grades of
sand; in this particular plant the customer has
opted for one grade.
Owing to the high and varied levels of silt
content in the material, the aggregates require
additional scrubbing to help ensure they
are cleaned to specification. This is achieved
through the PS 200R washer unit. The system
is specifically designed to work in the recycling
industry, its versatility and design enables it to
