Australasian Mining Review
Issue link: http://ebook.aprs.com.au/i/37922
308 Mining Magnets for the Mineral Processing System D High Voltage Magnet Crossbelt Separator Tube-Roller Magnet evices that are popularly used for removing ferrous contaminants from the minerals are various types of magnetic separators. Following are the magnetic separators that are used widely in mineral and mining industry: Wet Drum Separators Wet drum separators are widely used magnetic separators used in mineral industries especially in coal mines. They are in fact used to recover ferro silicon or other magnetic fines in dense media plants. They enhance both the plant productivity and product purity by removing contaminants. Wet drum separators can even remove very fine and weak contaminants even from dense materials. Due to this they are useful in those applications where product purity is given prime importance. Drum Magnets Drum magnets are used for removing ferrous contaminants from a wide range of free-flowing bulk and granular materials in high-volume applications. Minerals like coals, mica etc. consist of many other ferrous and non ferrous fine. These ferrous fines are captured by the magnetic assembly which is inside the unit’s shell. After the contaminants are removed, the cleaned product falls freely to a discharge point. There is a cleat that sweeps the ferrous debris through and out of the magnetic field. Tramp Iron Magnet Over Band Magnetic Separator In suspended plate magnets, from free flowing granular products metallic contaminants usually tramp iron are pulled up. The contaminants are collected on the self cleaning magnetic separator belt which are discharged through hopper. The occasional tramp iron materials are removed by suspended magnets from conveyor belt, vibratory feeder or gravity chute. Separators Suspended Plate Magnets Overband magnetic separators are quite similar to the suspended magnets which are fabricated and configured to trap and hold the tramp metal from the product carried by the conveyor. The magnets that are used in these types of separators are either ceramic or powerful rare earth magnets. Diesel Forklift Assembly The Metcalfe Group was founded by Neil Metcalfe in 1966. Roslyn Metcalfe (Neil’s wife) joined the company in 1970 and has been an integral part of the company since that date. With the passing of Neil in June 2000, Roslyn Metcalfe took over managing the company. In January 2007, the company was purchased by then Operations Manager, Roy Pereira who had been with the company for nearly 10 years prior to the purchase. With the purchase of the business, the new company changed the name to Metcalfe Group Pty Ltd The new company continues to forge ahead with a strong engineering base and is multi disciplined in Magnetics, Aircraft Ground Support, Hydraulics, Electronics, Mechanics, and heavy duty automotive electrical. The company is certified to the International Standards of ISO9001.2000, and has an enviable reputation in Aircraft GSE, Mining, Marine, Rail, Commercial and Industrial. METCALFE Magnets Division include the design, manufacture and service of Magnetic Lifting and Separation Equipment from Permanent Magnet to Electro Magnets in voltages from 12V to 220V DC, Including the following:- • Diesel Forklift Assembly • Crossbelt Separator • Tramp Iron Magnet • Tube-Roller Magnet • High Voltage Magnet • Separators • METCALFE Electric Motors • METCALFE Rail Engineering • METCALFE Truckelectrics • METCALFE GSE For more information, contact us at: Metcalfe Group Pty Ltd 45 Argyle Parade DARRA QLD 4076 Free Australia Wide STD: 1800 773 585 Ph: +61 7 3259 6000 Fax: +61 7 3217 0133 Email: metcalfe@metcalfe.com.au [Magnetic Lifting and Separation] _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _