Thyssen Krupp to Built a New Crushing and Conveying System for Copper MIning in Peru

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TURCK GmbH

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ThyssenKrupp AG

Some more Technical Details

The crushing plant’s main service and operating areas, including electrical infrastructure, will be physically separated and independent from the truck dumping level, which will significantly reduce vibration, dust and noise levels.

The semi-mobile design is especially suitable for mine sites affected by frequent seismic activities. The 63” – 114” heavy duty Thyssen Krupp gyratory crusher with its 1,200 kW direct drive takes the feed material from the feed hopper and reduces the run-of-mine copper ore to the required product size. The crushed ore is extracted from the surge bin underneath the crusher by means of a heavy duty low speed belt feeder.

The 2,800 mm wide ST 1800 conveyor will run at a nominal speed of 1.5 m/s and is powered by one 800 kW conventional drive and a variable-frequency drive (VFD). A 400 m long sacrificial conveyor carries the crushed ore from the semi-mobile crushing plant and crusher discharge conveyor to two overland conveyors spanning the 7.5 km distance to the coarse ore stockpile.

The first of the two overland conveyors will be 1830 mm wide with ST 6800 belting and will run at 6.2 m/s. It is powered by two 6,000 kW Siemens gearless drives. The largest of their kind in the world, these conveyor drives utilize Siemens Integrated Drive System technology to provide a high level of availability (exceeding 99%) by eliminating many of the traditional conveyor drive components such as reducers, couplings, and motor bearings and their associated maintenance times and costs.

The applied technology not only significantly increases the capability of overland conveyors for ever-higher capacity requirements and higher speed applications, but it also leads to reduced overall energy consumption and higher efficiency of these conveying systems.

The Gearless Drive System has been developed in cooperation by Thyssen Krupp and Siemens and was first installed in the Prosper-Haniel coal mine in Germany in 1985. This technology has been proven by a long list of successfully completed projects, with ongoing research and development.

More recent gearless drive conveying projects provided by Thyssen Krupp include the dual 3,800 kW gearless driven conveyor for Glencore’s Antapaccay mine in Peru, five 5,000 kW gearless drives for an overland conveyor system in Chile, and the overland conveyors powered by four 4,400 kW gearless drives for the MMG Las Bambas mine in Peru.

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