Siemens
has supplied the world’s biggest gearless conveyor drive system to the
Cuajone Mine in Peru which is operated by the Mexican mining company
Southern Copper Corporation (SCC). The belt conveyor has an output
totalling 12,000kW and will replace a railway system currently used to
transport ore out of the mine to the processing plant.
Not
only does the gearless drive enable efficiency to be increased by 3%,
it also cuts necessary maintenance work and associated costs, as wearing
parts such as couplings, motor bearings and gearboxes are no longer
required.
Gearless drives also enable the use of a continuous
conveyor belt, eliminating the need for transfer stations, reducing
susceptibility to faults, cutting out the need for high-intensity
maintenance and driving down costs.
The conveyor belt system
comprises three individual sections which are equipped by a total of
five Integrated Drive Systems. For the largest of the belt sections,
Siemens is supplying two gearless drive systems with an output of
6,000kW each, comprising a low speed synchronous motor and a Sinamics
SL150 cycloconverter. The two smaller feed and discharge belts will be
driven by two 500kW low-voltage motors using Sinamics S150 inverters
with regenerative feedback capability and one 1200kW medium-voltage
motor.
Siemens has previously supplied a drive system for a HPGR
(high-pressure grinding roll) system to the Cuajone Mine facility in
2013. SCC operates mines and metal processing factories in Peru, US and
Mexico. The company mines and produces copper, molybdenum, selenium,
gold and silver and also invests in the exploration and harnessing of
mineral deposits in Peru, Mexico and Chile.
Source : eurekamagazine
Source : eurekamagazine
