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May 2015
MODERN MINING
59
CRUSHING, SCREENING
AND MILLING
feature
screen media is its excellent open area, versa-
tility and relative low cost.
FLSmidth’s Poly Ripple (a polyurethane-
Vibro Optimax™ hybrid) are screens with
non-woven wires bound together by poly-
urethane bands. This construction reduces
or even eliminates the blinding and pegging
of screen surfaces. These polyurethane bands
are located above the nosing rubber, which
prevents metal to metal contact and allows
tensioning on the machine.
“A correctly installed and tensioned wire
screen such as this allows the secondary har-
monics from the vibrating equipment to be
transferred through the polyurethane to the
wire and introduces additional vibrations to
the wire itself. This introduces a self-cleaning
element to the screen media that eliminates
both blinding and pegging in most applications
and increases throughput. This eliminates the
need to shut down a screen for cleaning pur-
poses, which also contributes to a good health
and safety environment,” says Sibley.
FLSmidth’s wedge wire sieve bend screens
can be custom-designed and manufactured for
a range of industries. The main application is
to separate solids from liquids. “The curved
screen of a sieve bend allows for a greater
capacity than a flat wedge screen due to the
increased g-forces on material flowing against
the curve,” Sibley says.
Sieve bend screens, also known as DSM,
offer the benefit of an energy-efficient opera-
tion with no moving parts, which means no
energy input costs and reduced maintenance.
These screens can be used for sizing particles
down to 0,2 mm and resist clogging by near-
size particles.
Meshcape™ polyurethane
deck with BPS (bolt, pin and
sleeve) assembly.