The Importance Of Handling Metals

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Metal plays a key role in development and it is the backbone for the manufacturing industry. For years, various metal have been extracted from the mineral ore found in nature, but with the time high grade ore have is getting depleted and the option at left with us is to processing low grade ore which makes recovery process expensive. In such scenario recycling metals seems a lucrative option as it helps environment by reducing the amount of scrap or waste material getting disposed into landfills.
Typical source of scrap comes from the end of life products like cars, household equipment, electronic components, and waste products generated during the manufacturing process which constitutes a mixture of ferrous, nonferrous, semiconductors, plastic,
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Aluminum extraction consumes 49x106 Joules per kilograms of Aluminum recovered and Copper recovery by the smelting operation consumes 50x106 Joules per kilogram of Copper recovered (Woollacott and Eric, 1994) [2]. Hand picking or manual sorting can be utilized to sort Zorba, but it’s a highly labor intensive slow process and it is inefficient to separate optically indistinguishable material (Joerg Schunicht, 2014) [3]. Sink-float or dense media separation process can sort heavy material form light material, but it is inefficient to sort Twitch due to less difference in the density. Moreover, high amount of water is required for the operation along with chemical additives to control the density of liquid medium which attributes to environmental issues of waste media disposal (Joerg Schunicht, 2014) [3]. Eddy-current sorting technique is best suitable for sorting nonferrous metallic waste (Dalmijin, 1990) [4]. The potential of this technology to achieve high recovery with lower energy consumption has revolutionized the nonferrous metallic scrap recycling procedure with less environmental impact by …show more content…
At this low frequency the machine is capable of sorting particles with size greater than 1 inches but incapable to sort particles smaller than 1 inches.
The method discussed in this study is about using variable frequency eddy current sorter (VFECS) prototype to separate different nonferrous metal and alloy of size smaller than 1 inches. VEFECS is a solid state technology which operates at variable high frequency range between 1 – 10 KHz. The magnetic field frequency plays an important role in sorting of different nonferrous metals and alloys from each

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