MARKETS
The recent orders won by
vibrating screen and feeder
specialist Kwatani, have
cemented a reputation for
being one of South Africa’s
leading original equipment
suppliers (OEM) with a
truly cross-commodity
footprint. Kwatani’s custom-
engineered products are
now in some of the world’s
largest mines, and many
customers have standardised
their screens to ensure lowest
cost of ownership and high
performance, according to
general manager sales and
service, Jan Schoepflin.
While its base and core
market are in Africa, the global
demand for Kwatani products
has grown rapidly. A leading
diamond mining company
in Russia ordered Kwatani
screens at its newest operation
and specified Kwatani for
future projects; another order
from a large South African
diamond operator replaced
the last of their competitor
screens with a Kwatani unit.
Schoepflin says this is because
they have enjoyed years
Cross-commodity success for Kwatani screens
A 4.3m Kwatani scalper screen ready for despatch to the customer.
without unplanned stoppages
by using Kwatani screens. “It
has shown that our equipment
and service are just as effective
in unusually harsh climatic
conditions.”
At a local brownfield
diamond expansion project,
the company’s multi-slope
banana screens were matched
to the available plant footprint,
raising throughput from 250 to
500 tonnes per hour and later
breaking the mine’s tonnage
record.
While screening in
heavy minerals is Kwatani’s
stronghold, the company
has moved extensively into
coal, supplying the country’s
leading coal producer with
no fewer than 45 items of
large screening equipment,
including out-sized 4.3m-wide
units. Other recent coal-
related orders included
run-of-mine screens for a
medium-sized coal mine
in Mpumalanga. Again,
competitor equipment was
replaced by custom-designed
screens with optimised deck
angles, which significantly
increased tonnage.
The positive results
achieved with the Kwatani
equipment also led to
additional orders for the
mine’s expansion.
Sandvik launches next-generation ‘2 Series’ gyratory
Sandvik Mobile Crushers
and Screens is continuing its
ongoing product development
with the roll-out of its latest
‘2 Series’ product offering:
the new QS332 gyratory
cone crusher. This latest
addition has been upgraded
to encompass the many
product refinements of the
recently launched QH332
Hydrocone, to improve
operation, efficiency, and ease
of maintenance.
The compact QS332
is targeted at the most
demanding of aggregate
producers. Featuring the
renowned Sandvik CS430
gyratory cone crusher, it is able
36_QUARRY SA | MAY/JUNE 2019
to accept a feed size up to 90%
larger than current standard
cones. This produces benefits
for customers by delivering
improved productivity on such
applications as Type 1 crusher
run, or in primary gravel
crushing.
One of the special benefits
of this new model is its ability
to be adapted quickly for
operation in open- or closed-
circuit configurations. This is
achieved using its new optional
modular double-deck hanging-
screen (DDHS) system: a
self-contained finishing screen
module that can be added or
removed from the plant in less
than 30 minutes without the
need for any lifting equipment
on site.
The DDHS allows the plant
to produce two screened
products and recirculate the
oversize back into the feed
conveyor for reprocessing.
A further benefit of the
Sandvik QS332 and DDHS
is that it features a patent-
pending adjustment system
that allows the screen to
be quickly reconfigured to
produce one single-sized
finished product or two sized
finished products, depending
upon the customer’s demands.
The oversize conveyor
can be hydraulically rotated
for material stockpiling
(90 degrees) of up to three
products on the ground, or
for removal (180 degrees).
The tail section can be raised
hydraulically to give improved
ground clearance for transport
when loading or unloading.
The Sandvik CS430 cone
crusher at the heart of the
machine is equipped with a
hydroset system that provides
closed-side setting (CSS)
adjustment at the touch of
a button. The automatic
setting regulation system not
only optimises production,
but also keeps track of liner
wear, making it easy to plan
liner changes and minimise
interruptions in production.
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