Coal Age

MAR 2013

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VDMA The world's widest gold-ore banana screen leaves Jöst's U.S. factory for Newmont's Phoenix operation. product—the company points out that this mounting is standard on its screen designs. Second, extra-heavy duty 80 mm-thick polyurethane panels are used on the top-deck impact zone. Three maximum-duty Jöst R 818-14,500 exciters drive the screen on a 12 mm stroke at 830 rpm. The screen includes a fixed cover with an inlet connection, dust-collection ports and multiple inspection doors, while an isolation frame minimizes transmitted vibration from the screen. Since commissioning, Newmont has been very pleased with the screen's performance, Jöst reports, noting that it had been chosen as the supplier because of its extensive experience in building large screens and strong track record for efficiency and reliability. Recovery Technology for Coal and Minerals From its head office in Cologne, MBE Coal & Minerals Technology GmbH (MBE-CMT) offers basic and detail engineering for coal and minerals processing, components for complete plants and plant sections including modernization and capacity-increase measures, and automation and process-control equipment. The scope of its MBE-CMT Pneuflot cells at Qipanjing, China. VDMA 36 services includes feasibility studies, raw-material testing, financing concepts, erection and commissioning, personnel training, and pre- and after-sales service. Among the equipment offered by MBE-CMT, the company's Batac® jig is used for separating heavy and light fractions in processing all kind of coal, iron ore and ferro-alloy slags, as well as for many other minerals. With effective widths of between 1 and 7 m, Batac jigs can take feed sizes of up to 150 mm, with throughput rates of 30-800 mt/h. For the primary separation of coarse raw coal, its Romjig® moveable sieve jig operates with 30-400 mm feed with a maximum throughput of 350 mt/h. Meanwhile, MBE-CMT's Pneuflot® pneumatic flotation technology for processing coal, industrial minerals and ores offers a throughput of up to 600 mt/h of dry solids in each machine, equivalent to a maximum 1,400 m3/h of slurry. For iron-ore beneficiation, its Jones WHIMS® wet high-intensity magnetic separators are used for processing low magnetic-susceptible ores at up to 200 mt/h per unit, while its Permos MIMS® medium-intensity magnetic drum separators are designed for the dry and wet separation of ferroand paramagnetic ores, with throughput rates of up to 30 mt/h per metre length of drum. During 2012, the company established a pilot testwork plant in the Kuzbass coalfields in Russia. It also offers the use of a semiindustrial pilot Pneuflot machine that fits into a 20-ft container, and can be used in parallel with existing flotation lines to demonstrate the advantages of pneumatic flotation technology. MBE-CMT works with partners in other countries, and has Pneuflot units in place in institutes in Brazil, Canada, China and Russia, with a fifth soon to be installed in South Africa. Meanwhile, its own R&D; work has been boosted with the commissioning in January of a new testwork center in Cologne. Offering gravity sorting, magnetic separation and flotation systems, as well as crushing, milling and screening, the laboratory is designed to give clients the full range of processing options. MBE-CMT's head of R&D;, Dr. Karl-Heinz Becker, told Best of Germany that the facility has been designed to replicate flowsheets at pilot scale, and that it can simulate most complete processing lines. From this, he said, the company can develop customised flowsheets for wet or dry processes, together with capex and opex costs for handling specific deposit characteristics. VDMA MINING SUPPLEMENT • 2013

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