Catalogs >
Metso Automation >
HGMS Continuous

HGMS Continuous
1 / 8Pages

Catalog excerpts

High gradient magnetic separators Continuous HGMS Recover particles down to extremely fine sizes

High gradient magnetic separation Continuous HGMS Metso (as Sala Maskinfabrik AB, later Sala International AB) has a long tradition in magnetic separation. Already in the end of the 19th century “SALA” built its first electromagnetic separator. The High Gradient Magnetic Separation, HGMS, dates Continuous HGMS back to early 1970’s when “SALA” acquired MEA, Magnetics Engineering Associates, in Cambridge, Massachusetts USA and founded Sala Magnetics Inc.

Open the catalog to page 2

The HGMS is often indiscreetly referred to as WHIMS (wet high intensity magnetic separator). However there are a lot of differences, which places the Metso HGMS in a separate category: • Unlike to the WHIMS, HGMS is capable of handling and recovering particles down to extremely fine sizes due to the possibility to choose a suitable matrix grade with large collection area and to control the slurry velocity during the separation process. • The flushing sequence takes place outside the magnetic zone and this makes the Metso HGMS less sensitive to the content of ferromagnetic material such as...

Open the catalog to page 3

LT Level Transmitter DM Density Meter PI Pressure Gauge Screen Oversize Passive Matrix Valve Rinse Water Low Intensity Magnetic Separation (LIMS) Closed Cooling Loop Emergency Ower Flow LT Closed Coil Cooling Loop Power Supply Pulp Water Vacuum Station Flush Station Seal Water Flush Water Magnetic Product HGMS Process System 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 same during operation....

Open the catalog to page 4

Passive matrix 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 scree2as high-level sensors for triggering the alarm and switching the feed to the stand by compartment when required. Vacuum system 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...

Open the catalog to page 5

Power distribution unit and equipment super visory control (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 enclosed container, which is prewired and tested together with the HGMS unit in shop. The...

Open the catalog to page 6

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. 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. Field rating (kGauss) *Based on hematite-separation Notes 1. Model 120, 185 and 250 are available with one or two heads; Model 350 is available with one...

Open the catalog to page 7

• 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....

Open the catalog to page 8