Engineering & Mining Journal

APR 2013

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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Materials-handling Technology Center VDMA Nilos's type EMU vulcanization press. passes rubber products, vulcanizing presses and belt conveyors as well as belt accessories. At the end of 2012, it was already looking ahead to the 2013 bauma exhibition in Munich, where it will be demonstrating some of its most recent developments. Working together with the ITA Institute at Leibnitz University in Hannover, Nilos has been developing a more efficient procedure for splicing steel-cord belts. The company says its target has been to reduce the time needed for splicing, thereby saving energy and improving the splice quality, especially for thick conveyor belts. Belt conveyors are used for handling high mass flow-rates for bulk materials, with steel-cord belts most suitable for long-distance transport. However, because of handling and transport restrictions, these types of conveyor belts can only be produced in limited segment lengths, with the time-consuming splicing process for joining the belt segments being done on site. Preparation and vulcanization are the main steps involved in splicing, with special machines from Nilos being used, especially when hot vulcanization is needed. Heat is transferred into the joint through the top and bottom heating platens, while pressure is applied at the same time. Nilos says that its new method for hot-vulcanizing steel-cord belts uses the embedded steel cords as an additional heat source. The belt is cured from both the outside and the inside, meaning vulcanization is improved in the most important area for curing in a splice: around the steel cords in the carcass. Today, FLSmidth Wadgassen GmbH acts as the global technology center for materials-handling equipment within the FLSmidth group, the center having been formed following the acquisition and merging of two formerly independent specialists in this field, Koch Transporttechnik and MVT Materials Handling. The company's Wadgassen facility offers expertise in areas such as stockyard systems with stackers, scrapers and/or bucket-wheel reclaimers, silo and silo-discharging systems, bulk material loading and unloading for ports, and Koch pipe conveyors and drag-chain conveyors, as well as complete materials-handling systems for the cement, coal, iron-ore, copper, gold and fertilizer industries. For more than 10 years, FLSmidth's operation in Wadgassen has been working with other group offices, providing and receiving engineering and design support as well as activities such as training and supervision. It is an integral part of the company's "One Source" service model for a wide variety of materials-handling projects. In recent years, these have included the design and supply of a heapleach plant, including all conveyors, tripper cars, a crawler-mounted spreader and a link bridge for Southern Copper Corp.'s Tia Maria copper project in Peru, and four triple-track mobile sizing plants for Fortescue Metals Group in Western Australia. It has also supplied belt-conveying systems and a circular stockyard for copper concentrate to Codelco in Chile, shiploading facilities—including a pipe conveyor for copper concentrates—at Tisur's Matarani port in southern Peru, and two 16,000 mt/h iron ore shiploaders for Vale in Brazil. Other specific projects undertaken by FLSmidth Wadgassen over the past few years have included a 5.3 km-long, 800 mt/h pipe conveyor for Morobe Mining in Papua New Guinea, another for Cementos Lima in Peru, and a 4.5 km-long, 650 mm-diameter pipe conveyor that carries 4,000 mt/h of coal for the independent power producer, NTPC, in Vallur, India. It also supplied a stockyard and conveying system, and shiploading facilities, for Cua Ong Coal Preparation Co. in Cua Ong, Vietnam. For the Peruvian project, 6.5 km of the 8.2-km-long pipe conveyor run in tunnels beneath Lima, with the system capable of handling raw materials in one direction, and cement clinker in the other. In Gujurat, India, a Tata Power subsidiary now relies on a stockyard facility and conveying system the company supplied to move coal 12 km from the port of Adani to its 4,000 MW power station. The system is designed to convey and stack 6,800 mt/h of coal in the stockyard, then reclaim at 4,500 mt/h to feed the overland conveyor running into the power plant. A bucket-wheel reclaimer supplied by FLSmidth Wadgassen to the port at Iskenderun, Turkey. VDMA 30 VDMA MINING SUPPLEMENT • 2013

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