HGMS cyclic The Metso High Gradient Magnetic Separators (HGMS) are used in many magnetic separation applications. Among these are the processing of more strongly magnetic minerals of Fe, Co and Ni as well as less magnetic minerals such as rare earths and industrial minerals, which normally are not regarded as treatable by magnetic processes. Even weakly, para-magnetic materials can be processed by the HGMS including brightening of kaolin clays, separation of galena, chalcopyrite and sphalerite; removing Fe and Cr from glass sand; and cleaning of refractory materials, coal and phosphate concentrates. Application The capacity of the Metso HGMS varies with application and the parameters for selection of a suitable HGMS unit for a specific process is normally established by proper testing of the material in a laboratory unit. The operating parameters sought are matrix loading, superficial pulp flow velocity, magnetic strength and matrix grade. The test data are then used to select the canister diameter and to determine the cycle time. • High separation efficiencies • Fine particle processing • Simple reliable design with no moving parts • Easy flushing of magnetics • Low specific power consumption • Low maintenance cost • Long component life • Automatic operation – minimal equipment supervision Operating principle © Metso Corporation, TS HGMS cyclic 1105-en Sometimes the sizing process reveals that a cyclic machine may not be a practical or economical selection. This is typical when the magnetic product is around five percent of the feed tonnage. On such occasions a continuous machine may prove to be a more suitable selection. Advantages • Broad range of applications • Wide range of equipment sizes and capabilities For more information, contact your local Metso representative. www.metso.com Metso Minerals (Sweden) AB, SE-733 25 SALA. Tel: +46 224 570 00. Specifications in this document are subject to change without notice. Product names in this publication are all trademarks of Metso Corporation. Technical specification High gradient magnetic separators

From the above equation it is evident that in a homogenous magnetic field there is no resultant attraction force on the particles. This is illustrated in Fig.1 where the left part shows the undisturbed field and the right part shows a disturbed field. Field gradient is shown here by the varying distance between the field lines. Any sharp edges of small dimensions will cause such a field distortion, and, hence, an increased gradient. A familiar illustration of this phenomenon is an ordinary permanent horseshoe magnet attracting iron shavings. The shavings will stick mostly to the edges of the...

Since the Metso HGMS cyclic is available in many sizes and ratings to suit the largest possible range of applications the following designation system is used. Example: The model Metso HGMS 107-15-20 includes the following information: shows that the matrix is optimally loaded, the feed to the separator is stopped and the rinse cycle occurs. 107 – canister (process vessel) OD (outer diameter) in cm – models available from 10 to 305 cm The rinse cycle allows for clean water to pass through the matrix, the separator vessel, and piping to remove non-magnetic particulates. The rinse cycle comprises...

Technical specification The Metso HGMS magnetic separator system consists of: • Separator assembly • Tanks for rinse and flush • Frame-mounted when applicable • Piping for slurry and water • Associated valves • DC power supply • Instrumentation • Automatic Process Control • Magnet Coil Cooling System Laboratory and pilot plant testing The tests performed with the HGMS in the laboratory are exploratory tests and more detailed tests are required. These exploratory tests are performed to determine whether the HGMS is applicable and pilot plant tests are required to obtain the ultimate performance...

Model H mm (ft) L mm (ft) W mm (ft) Power Weight Matrix area (magnet) (empty) *38-15-10= 38(Outer diameter in cm)-15(matrix height in cm)-10 (field rating in kGauss) Magnetic field available 5,10,15 and 20 kGauss ** Site specific For more information, contact your local Metso representative, www.metso.com Metso Minerals (Sweden) AB, SE-733 25 SALA. Tel: +46 224 570 00. Specifications in this document are subject to change without notice. Product names in this publication are all trademarks of Metso Corporation.