Coal Age

MAR 2013

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Crushers and Screens that Bring Mobility to Processing VDMA Through its Kleemann range, the Wirtgen Group GmbH group offers a wide range of mobile jaw, impact and cone crushers, as well as mobile screening plants. Kleemann has been in the minerals-processing business for more than 150 years, with products designed to tackle hard minerals and materials. It also provides application consulting for its customers to help them select the right machine for their requirements. Kleemann's product range includes stand-alone machines and interlinked machine combinations. Its Mobicat mobile jaw crushers can handle from 100 to 1,500 mt/h, and the Obirex range of mobile impact crushers from 350 to 700 mt/h and more. In addition, its secondary crushers such as the track-mounted Mobifox impact crushers and Mobicone cone crushers are designed to be interconnected with primary crushers and screens. The company also produces Mobiscreen screening plants with areas of 7-18.4 m2 and capacities of up to 1,000 mt/h. Loesche: Patented Grinding Technology Since 1906, Loesche GmbH has been constructing vertical-roller grinding mills. The company patented this technology in 1928, since when it has been subject to continuing development. Loesche says its key competence is the design and development of individual concepts for grinding and drying plants for the cement, iron and steel, power, ore and minerals industries. Its service portfolio ranges from first concept to commissioning, together with mainte- nance, repairs and training, as well as the modernization of grinding plants and the provision of spare parts. With its headquarters in Düsseldorf, Loesche has subsidiaries in the U.S., Brazil, Spain, the U.K., South Africa, India, the United Arab Emirates, Russia and China, as well as agents in more than 20 countries. In April 2012, it launched a close cooperation agreement with the Austrian pyro-processing specialist, A TEC Holding GmbH. The two companies are now partners in undertaking plant improvements and environmental projects, and can offer complete process solutions. Having also taken over Ucon AG Containersysteme's specialized combustion-technology unit last year, Loesche has added thermal process technological solutions to its areas of related expertise with industrial burners and hot-gas generators. In late 2011, the company received an order to supply the world's largest single coal-grinding plant for pulverized coal injection (PCI) at a steelworks. The 120 mt/h-capacity LM 43.4 D mill for SSI Redcar in England is also the first use of a four-roller mill for this application, Loesche says. The mill is matched with one of the company's Loma LF 28 hot-gas generators, rated at 17 MW and able to run on both blast-furnace gas and coke-oven gas at maximum mill throughput. Building on its expertise in containerizing milling systems, as reviewed in last year's Best of Germany in relation to a coal-grinding mill, Loesche has now developed its OGPmobile, a containerized mobile ore-grinding plant. Following the first successful test runs in Turkey at the beginning of last year, the company moved it to South Africa for several months where it was used for grinding a variety of ores. Loesche says this series of tests has proved that the containerized concept for a compact laboratory plant meets different local, climatic and technological requirements, and that it is easy to move, install and dismantle. The plant demonstrated good availability, as well as the ability to respond to changes in feed and climate, and differing process requirements. The concept allows Loesche's staff to carry out grinding tests on site using representative samples, and then use this information as the basis for full plant designs. High-precision Process Separation in Liquid-solid Slurries The mill at the heart of Loesche's OGPmobile plant. VDMA 38 From its international production facilities in Oelde, GEA Westfalia Separator Group GmbH supplies specialist centrifuges and decanters that are increasingly finding applications in mineral processing for cleaning and separating different phases within hydrometallurgical leachates. The company recently exhibited for the third successive time at MINExpo, its senior manager for mineral processing, Tore Hartmann, told Best of Germany, having been supplying separation solutions for industrial minerals for the past 25 years before starting to focus on the international hydrometallurgical market about 10 years ago. With increasing worldwide interest in hydrometallurgical recovery of a variety of metals as an alternative to energy-hungry smelting and refining, GEA Westfalia Separator Group has been successful in transferring expertise gained over 120 years in the separation business to this market. Compact in size and capable of producing very rapid separations, the company's principal products for this application, vertical disc-stack and horizontal decanter centrifuges, are designed to operate within existing process plants as well as being placed within newly designed SX-EW circuits, Hartmann added. VDMA MINING SUPPLEMENT • 2013

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