international
construction
july-august 2013
QUARRYING
40
The big payback
Finnish crushing contractor Sundvik was one of the
first companies to take delivery of Metso’s new C120
jaw crusher following its launch in 2011. It has since
clocked-up 4,000 hours of production.
ABOVE: Levelling
meters, payload
weighing
systems and
cycle counting
are all features
of Doosan’s new
large ADT models.
BELOW: RDS has launched the
LOADMASTER a100 on-board weighing
system, which it describes the new
industry benchmark in terms of
accuracy and ease of use in difficult
conditions and terrains. The CAN-
based system uses cutting edge sensor
technology and signal processing
techniques providing precise and
consistent weight information.
blow and is suited to medium to hard rock. The large piston
diameter enables it to maintain high efficiency even at low air
pressure, and maintenance intervals are longer than for the BBD
94 DSI.
“Our customers no longer have concerns regarding noise levels
disturbing the local residents,” said Mr Marques.
Tough crushing
The processing side of the quarrying industry also has potential
to provide cost savings with correctly specified new machines.
Finnish crushing contractor AB R&S Sundvik was one of the
first in the world to buy the Metso’s C120 jaw crusher when it
was launched in 2011. The unit has since clocked-up over 4,000
working hours and crushed some 500,000 tonnes of material.
“The long and well-designed cavity combined with a large
feed opening seems to guarantee steady and high productivity.
Within our operations, we have never aimed for short, high
peaks but a steady, continuous production that really makes
for visible results,” said Stefan Sundvik, responsible for the
contractor’s crushing operations.
BBC 34 DSI pneumatic rock drills, which are delivering a 5
db(a) noise reduction compared to the older Atlas Copco BBD
94 DSI units. This has been a key factor in the park, which is a
major tourist attraction, as well as an urban environment.
“Field tests showed that the BBC 34 DSI provides the same
high penetration rate as the BBD 94 DSI, but with a noise
reduction of 5 dB(A), and this is experienced by the human ear
as a 50% lower noise level,” explained Torres Marques, business
line manager at Atlas Copco Portugal.
The BBC 34 DSI pneumatic rock drill has a piston diameter
of 80 mm and 70 mm stroke. It delivers high impact energy per
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