Liberation characteristic and physical separation of printed circuit board (PCB)

Characterization and mechanical separation of metals from computer Printed Circuit Boards (PCBs) based on mineral processing methods

“…A new ''two-roll-type corona-electrostatic separator'' was built by Jiang et al (2009) to overcome the limitation of the classical roll-type corona-electrostatic separator (Jiang et al, 2009). Guo et al (2011) used physical methods, including pneumatic separation, electrostatic separation and magnetic separation to enrich metal content of PCBs (Guo et al, 2011).…”

Electronic Waste Recycling

“…In a first step the boards are reduced to a size <10 mm and then the particles are reduced to sizes that permit the release of metals in a second step (<2 mm). The particle size should not be less than 0.3 mm because the degree of separation between metals and non-metals is reduced when the particles are very small [75,76].…”

Liberation characteristics after cryogenic modification and air table separation of discarded printed circuit boards

“…Crushing is a crucial step for the subsequent treatment of PCBs [14][15][16][17]. There are three primary objectives for size reduction by crushing: 1) generation of particles that are more easily handled than bulky parts, 2) generation of uniformly sized and shaped particles that can be separated effectively in downstream processes, and 3) liberation of dissimilar materials from one another [18,19]. Because traditional grinding is not suitable for PCB recovery, a wet impact crusher and shear hammer mills are generally used to obtain coarse size reduction and liberation of materials [10,20].…”