DRIVES AND GEARS
A Siemens gearless conveyor drive similar to
the two that are being supplied to Anglo
American’s Quellaveco copper mine
4,700 m long and 1,830 mm wide featuring
Siemens’ dual 5.5 MW gearless drives operating
at a design tonnage of nearly 11,000 t per hour.
Siemens will also provide the e-house with MV
and LV power distribution and the cooling system
for motors and e-house. The automation of the
conveyor system as well as for the complete
mine will be realised with the process control
system Simatic PCS-7.
The two 5.5 MW motors for Quellaveco have
been manufactured by Siemens in Berlin and are
being delivered in Q4 2019. Quellaveco will be
after Antapaccay, Las Bambas and Cuajone
already the fourth gearless
driven conveyor in Peru’s
mining sector.
“This order again shows
how gearless conveyor
systems meet today’s
demand for ever more
efficient mining solutions
and increased safety
requirements,” Torsten
Gerlach, CEO of
thyssenkrupp’s Mining
Technologies business unit
explains. “It is the seventh
overland conveyor project of this magnitude
utilising gearless drives that have been awarded
to us since 2010. Together with our partner
Siemens, we have managed to become one of
the world leaders in bringing this technology to
the market.”
WEG presents M series for mining
WEG, a leading global manufacturer of motors
and drive technology, recently presented its new
M (Mining) series of slip ring motors for use in
the mining and cement industries. Available in
frame sizes IEC 355 to IEC 1000, the new M
Mining slip ring motors cover the power range
from 250 kW to 10 MW at 50 Hz or 60 Hz line
frequency. These three-phase induction motors
between 4 and 14 poles and are designed for
voltages up to 13.8 kV. “The robust M Mining
series is intended for dusty environments in the
iron ore or cement sectors. This makes the slip-
ring motors a reliable choice for mills, crushers,
blowers, exhaust fans, conveyors, centrifuges,
and other applications in the mining and cement
industries.”
“Their performance and robustness make the
new M Mining series of motors, with their high IP
rating, steel casing and two different brush
systems, an excellent choice for applications in
the mining and cement industries," commented
Andreas Schulte Mesum, Director European High
Voltage Solutions based at WEG Germany GmbH.
“The design is based on specific
electromechanical properties that offer long life
and high stability.”
The wound rotors of slip ring motors allow
them to achieve high starting torques along with
low start-up current. In contrast to squirrel-cage
motors, the windings are connected to three slip
rings that allow a variable resistance to be
inserted in the rotor circuit. This has several
major benefits for users including: higher rotor
circuit resistance which allows the motor's start-
up characteristics to be improved; the motor
starting current is kept virtually the same as the
rated current; and loads with high starting
torque can be driven, as well as loads with high
inertia. Further advantages include higher
efficiency and simple installation.
Challenge your
material limits
Nothing should stand in the way of productivity – least of all to the job at hand. We’ll support you too, with an agile
the materials you move. Our compact Hägglunds direct drive global network and smart connectivity to bring you
systems give you high availability, but also the means to adapt peace of mind. We Move. You Win.
www.boschrexroth.com/hagglunds