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Issue link: https://coal.epubxp.com/i/131326
VDMA ty of 110 mt/h, with three medium and three fines units, each with capacities of 55 mt/h and 45 mt/h respectively, giving a total plant throughput of up to 740 mt/h. The company reports that to date it has supplied around 500 alljigs world-wide. Hazemag: Complete Mineral Processing Solutions Headquartered in Dülmen, and part of the Schmidt, Kranz group, Hazemag & EPR GmbH claims a long track record of outstanding engineering and world-class products, with a history that dates back to 1842. During 2012, the company was transformed from being a focused crusher supplier, mainly for the cement and aggregates industries, into the Hazemag group—a solutions provider for minerals processing that is supported by its newly created business development center. Building on years of experience in crushing with impactors and hammer mills, Hazemag now has hard rock gyratory, cone and jawcrusher technology through its subsidiary IMS in South Africa. Its acquisition of MinPro, meanwhile, brought impact roll crushers and feeder-breakers to its portfolio, so that it can now offer a complete range of crushing technologies. The company has also increased its ability to supply customers with turn-key projects in mineral processing. Its acquisition of allmineral has brought expertise in coal and ore beneficiation technologies to the group, while the integration of the long-established engineering firm, Saarmag, into Hazemag has given it the ability to offer systems for transporting, stacking, reclaiming and stockpiling bulk materials. By way of an example of its capabilities, it recently installed a complete primary-to-tertiary crushing plant at one of South Africa's largest iron ore mines. In the plant, a primary gyratory followed by two secondary gyratories and four tertiary cone crushers reduce the ore down to -30 mm. Hazemag followed this by supplying a complete processing plant based on allmineral's jigging technology, creating the world's biggest iron ore beneficiation plant with 24 alljigs®, the company claims. Hazemag says it has also been active in supplying new crushing concepts to the diamond industry. After extensive testwork, it designed crushing technology for De Beers that significantly reduces stress on the diamonds during ore crushing, and as a result minimizes losses during subsequent processing. Underground and open-pit coal processing is also an important market area for Hazemag. Its crushing and mine-development equipment are well-known in longwall applications, while allmineral's wet and dry jigs are widely used in coal beneficiation. The company has also built on its success in supplying open-pit mobile and semi-mobile crushers, with units having been commissioned recently in both China and southeast Europe. Finally, Hazemag's impact crusher technology continues to provide a reliable crushing solution for the cement and aggregates industries, with the company able to provide customized solutions, up to complete plants, to address customers' specific requirements. Making the Most of Vibration Technology Also with its headquarters in Dülmen, Jöst GmbH & Co. KG specializes in applying vibration technology to handling and processing a wide variety of bulk materials for primary industries, and also for other end-users such as the foundry, steel, environmental, recycling, chemicals and food industries. With more than 90 years experience, the company manufactures sophisticated machines and systems mainly based on vibration technology, together with solutions for sorting, screening and separating. Growth in its international operations has led to the formation of subsidiaries in Australia, China, France, India, South Africa and the U.S. As well as vibration-based systems, Jöst also offers specialized sorting, drive, and lifting and tipping technologies, which are handled through its Dieterle subsidiary. The company reports that during 2012, Newmont Mining commissioned a 4.3 m-wide by 7.3 m-long double-deck banana screen at its Phoenix operation at Battle Mountain, Nevada. One of two purchased from Jöst, the screen was designed and built by the company's U.S. subsidiary in Chicago, Illinois. Weighing 35 mt, this is the widest gold ore screen in the world, according to Jöst, being used as a secondary crusher scalping screen to remove -1 in. (-25 mm) material. The top deck serves as a relief deck, removing plus-3 in. (75 mm) material to reduce the loading on the bottom deck, and allowing maximum capacity and efficiency. Crushed gold ore up to 300 mm in size is fed to the screen at a rate of 2,800 ton/h. According to Jöst, a number of special design parameters were used to accommodate this heavy loading and high capacity. First, the top deck cross-beams are massive and are mounted at a 45° angle to maximize the stiffness and to shed the A Hazemag type SB impact roll crusher. VDMA 34 VDMA MINING SUPPLEMENT • 2013