Engineering and Mining Journal - Whether the market is copper, gold, nickel, iron ore, lead/zinc, PGM, diamonds or other commodities, E&MJ takes the lead in projecting trends, following development and reporting on the most efficient operating pr
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BAUMA 2013 heavy-duty mining vehicles for operation in surface mines and stone quarries. MTU's renowned Series 2000 and 4000 units continue to be available for countries with higher emissions thresholds. Fluid Coupling for High Powered Belt Conveyors Voith displayed the TurboBelt 780 TPXL, a fluid coupling developed for large conveyor drives. An innovative XL blade wheel profile transmits twice the power previous couplings of similar size could achieve. It is designed for 6- and 8-pole induction motors operating at speeds of 900 to 1,200 rpm. The startup with precisely-controlled introduction of torque not only protects the belt, but also the entire driveline. Even overloaded conveyors can be started reli- COMPANY PROFILE- PAID ADVERTISEMENT Voith's TurboBelt 780 TPXL fluid coupling. ably. Start-up times of up to several minutes can be individually set in the control system. This new fluid coupling was first put to the test in May 2012 at one of the largest iron ore terminals in northern Brazil. The operator decided to install three TurboBelt 780 TPXL couplings in the drives of a 1,451-m (4,760-ft) long conveyor. The couplings and conveyor system operated smoothly. As the conveyor transports around 10,000 metric tons per hour (mt/h) of iron ore, reliability was a high priority. When combined with reliable mechanics, the hydrodynamic TurboBelt 780 TPXL coupling provides extremely high system availability of up to 99.8%. Maintenance concerns are minimized as the hydrodynamic power transmission is completely wear-free. Compared with traditional couplings, the TurboBelt 780 TPXL requires only half as much installation space and is also significantly lighter. Altogether, the couplings helped increase the productivity and profitability of the belt conveyor. To operate the conveyors in the most efficient way, Voith offers not only couplings, but also optimal drive solutions. The drive package solutions include the drive hardware, PLC controller and supervision of installation as well as commissioning. Integrating Power Technology for Mining The theme for the Siemens stand at bauma was Drive Your Mining Business with Siemens. For 85 years, Siemens has been working with the mining business adapting electrical technology to meet the industry's needs. In the 1950s, it 100 E&MJ; • JUNE 2013 www.e-mj.com