HGMS
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High gradient magnetic separators Outstanding separation selectivity

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2 High gradiant magnetic separation

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High gradient magnetic separators – for outstanding separation selectivity Metso High Gradient Magnetic Separators (HGMS) are designed to recover weakly magnetic material from non-magnetic matter and can be used for many applications including the processing of iron ores and rare earths. In addition to the strongly magnetic minerals of Fe, Co, and Ni, a vast number of weakly magnetic minerals, which are not normally treatable by ordinary magnetic separators, may be processed by high gradient magnetic separators. The HGMS is often indiscreetly referred to as WHIMS (wet high intensity...

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Matrix material differ from coarse grade expanded metal to fine steel wool for special quality. The Metso HGMS – solves your magnetic sepa The built- in PLC system reduces the cost of The HGMS separators and filters supervision and operation to a minimum. are designed around a unique Low maintenance costs magnetic system with high The HGMS is furnished with wear protection capacity matrix material which lining wherever possible. The wear of other together produces the required non-lined components like the matrix material, is extremely low due to the controlled high magnetic field gradient...

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aration problems The magnet system The HGMS comprises a solenoid surrounding a non-magnetic process vessel. An iron return frame surrounds the coil itself. The solenoid design overcomes many of the limitations of working within the air gap of a conventional horseshoe shaped magnet. The most important advantage of the design is that the return frame cross section can be increased to cope with higher field strengths without magnetic saturation. A second advantage is that the direction of the magnetization becomes parallel with the pulp flow and a third is the reduction of stray field around...

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Applications As a lot of minerals are magnetic to some degree and others are associated with minerals that are ferro agnetic or paramagnetic, m high gradient magnetic separation can often be used in separation processes where normally difficulties are experienced with other processes. The paramagnetic minerals at the higher end of the list are normally easy to recover. Many low susceptibility minerals are associated with other minerals or have extra Fe in the crystals, and are hence often possible to separate. As examples of HGMS applications can be mentioned • Hematite recovery •...

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LT Level Transmitter DM Density Meter PI Pressure Gauge Screen Oversize Passive Matrix Valve Rinse Water Low Intensity Magnetic Separation (LIMS) Emergency Ower Flow Closed Cooling Loop Closed Coil Cooling Loop Power Supply Pulp Water Vacuum Station Flush Station Seal Water Flush Water Magnetic Product HGMS Process System Technical description Metso HGMS unit Auxiliary equipment The main unit consists of a heavy frame, one to three magnetic heads, and a matrix ring with matrix cassettes. The magnet head(s) are open on two sides to allow the matrix ring to travel continuously through the...

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Passive matrix Wear plate in magnet head Passive matrix Vacuum system Cooling station To achieve an uninterrupted operation the feed to the separator must be controlled with respect to the feed particle top size, preferably by screening to make sure that the feed is suitable for the selected matrix grade. Any foreign debris such as wood sticks, metal fibres and plastic must be screened off. The magnetic concentrate is flushed out of the matrix with water. To increase the pressure drop over matrix at the time of flushing the discharge is connected to a vacuum system consisting of a receiver...

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High gradiant magnetic separation 9

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Web and ring seals around each matrix cassette noticeable near the periphery of the ring. Power distribution unit and equipment super isory control v (PLC) The Metso HGMS requires direct current (DC) for energizing the magnet coils and hence a power transformer, and DC converters are provided. The DC converter also controls the current for the magnet coils. The power supply unit normally also provides for the power to the auxiliary equipment and a PLC is integrated in the system for control logics. All components are installed in cabinets, which in turn are installed in a special totally...

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HGMS Continuous On request many functions, which are not standard, may optionally be included in the Metso HGMS control system. One such added function might be control of the feed density and flow; another could be automatic control of the rinse water flow and the matrix condition. Matrix Ring No of Magnetic Mean Matrix Model Heads Diameter, m area, m2 120 1 or 2 1,20 0,4 185 The maintenance of the Metso HGMS is normally limited to changing of the seals around the matrix ring. The life of the seals vary considerably from application to application. Models and sizes The original HGMS...

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• Metso Minerals Industries, Inc. 2715 Pleasent Valley Road, York, PA 17402, USA, Phone: +1 717 843 8671 • etso Minerals (South Africa) (Pty) Ltd. M Private Bag X2006, Isando, Johannesburg,1600, South Africa, Phone: +27 11 961 4000, Fax: +27 11 397 2050 • Metso Minerals (Australia) Ltd. Level 2, 1110 Hay Street, West Perth, WA 6005, Australia, Phone: +61 8 9420 5555, Fax: +61 8 9320 2500 • Metso Minerals (India) Pvt Ltd 1th floor, DLF Building No. 10, Tower A, DLF Cyber City, Phase - III, Gurgaon - 122 002, India, Phone: +91 124 235 1541, Fax: +91 124 235 1601 • Metso Perú S.A. Calle 5 Nro....

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