Mechanical Technology — February 2016
21
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Materials handling and minerals processing
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Enduron dewatering screens ensure maximum
efficiency and lowest cost of ownership.
JHDA and Portaclone. “Weir Minerals Africa
continues to provide support for these screens
and, in a number of installations, the screens
have operated for in excess of 10 years
without any replacements being necessary,”
says Winchester Maphosa – Weir Minerals
Africa product manager for comminution and
screens.
He explains that Weir Minerals has imple-
mented a number of innovations to improve
the design of the dewatering screens in order
to increase the longevity and maintainability
of the screens. An example he cites is the
replacement of the corrosion resistant 3CR12
box deck frame design with a crossbeam and
3CR12 stringer/runner design. This has elimi-
nated the downtime and production losses
that previously resulted from premature deck
failures due to latent welding defects.
Another brand within the Linatex range
from Weir Minerals recently launched in the
North American coal market is the high per-
formance Fusioncast
®
polyurethane screen
media panels. The material is designed to
maximise service life through superior abrasion
resistance, a critical factor in coal dewatering.
The product’s properties and wear characteris-
tics make it ideal for use in a number of coal
applications including raw coal refuse screens
and fine screening.
“In field trials it was confirmed that the
product exhibits wear life advantages of up
to 50% when compared to injection moulded
polyurethane screen media panels. This results
in a significant time and cost saving for cus-
tomers. Added operational flexibility is also a
feature, because the product can be supplied
with a wide range of openings for separations
as coarse as 25 mm,” says O’Bryan
An example of the success of this product
is in an operation in North America’s Western
Kentucky. After conducting six weeks of head
to head trials between the existing continu-
ous slot panels and the Fusioncast panels,
the Fusioncast panels were found to have a
significantly superior wear life performance.
“As a result of the resounding success of
the Fusioncast technology trials, the customer
opted to replace the 1 100-plus panels with
Fusioncast panels throughout various raw
coal, clean coal and fine refuse screening ap-
plications in its plant. Further leveraging the
success of the trials, the company has been
invited to tender on a number of screen media
supply contracts, including one for some of
the world’s largest coal preparation plants,”
O’Bryan points out.
In 2014 Weir Minerals Africa aligned its
screens brand with its Enduron comminution
equipment, allowing the company to provide
3.0 to 4.3 m wide screen designs for large
Coralynne&Associates+27 (011) 849 3142 • Optimum material flow • Up to 80% decrease in material degradation • Reduced dust and noise levels • Virtually maintenance free • Greatly reduced spillage • Significant reduction in belt damage ABSOLUTE MATERIAL FLOW CONTROL ABSOLUTE MATERIAL FLOW CONTROL SOUTHAFRICA TM Phone: +27 (0) 11 827 9372 Email: info@webachutes.commodular coal plants. O’Bryan says
that the Enduron VD dewatering
screen range has been designed to
ensure that maximum efficiency and
lowest cost of ownership is achieved.
Featuring an innovative 45° degree
feed section, the Enduron screen’s feed
profile effectively increases the screen-
ing area and the dewatering capacities,
using high feed end velocities to aid in
the dewatering process. The main deck
of the screen slopes upwards to maxi-
mise solids retention and to dewater
the cake bed.
The lightweight Enduron VD dewa-
tering screen is suited to applications
in the sand and aggregates, and min-
ing and minerals processing industries
and can be supplied in variations from
0.3 to 3.0 m wide.
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