By Hugo Marcelo Veit, Andréa Moura Bernardes
This ebook offers an outline of the characterization of digital waste. moreover, processing suggestions for the restoration of metals, polymers and ceramics are defined. This e-book serves as a resource of data and as a tutorial technical reference for working towards scientists and engineers, in addition to for students.
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Extra resources for Electronic Waste: Recycling Techniques
Sample text
2 Size Separation After passing through the comminution phase, the material generally has to be classified. Size classification is based on the separation of particles according to their different size. One of the simplest and most widely used forms for size separation is sieving. This is done with sieves that consist of perforated surfaces over which the particles are moved. C. Kasper et al. 22 perforations while the larger particles remain on the sieve. This process separates the material only by the size of its particles, and the material is not identified by any other property.
C. Kasper et al. deposit faster. In addition, the charged particles of non-metals are attracted by the rotor and remain “trapped” for a longer time before falling into the deposits [46]. The corona electrostatic separators usually consist of: a grounded rotating drum and two electrodes (one electrode and a static Corona electrode), a cleaning brush and various particle trajectories. The mixture of particles is fed onto the surface of the rotating drum, where the ion bombardment is applied through the ionization electrode.
Schuberta G, Bernotatb S (2004) Comminution of non-brittle materials. Cui J, Forssberg E (2003) Mechanical recycling of waste electric and electronic equipment: a review. Kasper AC (2011) Caracterização e reciclagem de materiais presentes em sucatas de telefones celulares. Gupta A, Yan D (2006) Mineral processing design and operation: an introduction. Luz AB, Sampaio JA, Salvador LMA (2004) Tratamento de Minérios. Rio de Janeiro. Zhang S, Forssberg E (1997) Mechanical separation-oriented characterization of electronic scrap.
