31
(Hamos 2014). Processing capacity is 2–4 [tonnes/h] for large home appliances and
heavy equipment and 1–2 [tonnes/h] for small or medium equipment. Line No. I is
equipped with (Hamos 2014):
• Belt conveyors and vibratory feeders
• Chain crusher
• Dust extraction systems
• Pneumatic sieves
• Separators: magnetic, eddy current, and electrostatic
The waste equipment and large assemblies after manual preliminary disassembly
are transferred to the chain crusher. After crushing, the material transfer is with a
vibrating feeder to pneumatic sieves and screens. The processing system is enclosed
in a casing, so that dust formed during the process can be led outside by a pneumatic
de-dusting system. The fraction of the processed material with larger dimensions
not separated by pneumatic sieves goes to the manual sorting station, from which
the components that have not been shredded can be shipped to other plants.
Line No. II is designed to process smaller electronic devices and equipment but
also to crush residues from the No. I system and other sources. A hammer mill is
used for grinding, in order to facilitate the separation of the metal fraction from
other materials at a later stage. Then the waste is screened and dust is removed. The
basic devices in line No. II include:
• Belt conveyors and vibratory feeders
• Hammer mill
• Screening separators
• Electrostatic, magnetic, and eddy current separators
• Gravity separators
The processing steps in line No. II are similar to No. I line, in addition to the
manual sorting station for the separation of unprocessed components. The technical
parameters of the entire system are summarized in Table 2.6. The basic version of
the system stores material fractions after separation in elastic containers (big bags).
It is possible to install conveyors for the transportation of processed material to
containers placed outside the hall.
The equipment containing refrigerants require a different approach than other
large home appliances. The refrigerant must be removed from each piece of waste –
especially from the compressing unit. Disassembly takes place according to the
following steps: after removing the shelves, drawers, glass, and other easily removable elements followed by refrigerant removal with the refrigerant suction system.
Then the aggregate, evaporator, and condenser are removed. The first grinding is
performed on a double shaft shredder, the second on a vertical chain crusher. The
polyurethane foam is drawn off pneumatically using a cyclone separator. Separation
of ferrous metals takes place on a magnetic separator and then on eddy current separator separates nonferrous metals from plastics. For technical data for the cooling
appliances, recycling line is summarized in Table 2.7 (Vary 2018).
2 Reconfigurable Recycling Systems of E-waste
(Hamos 2014). Processing capacity is 2–4 [tonnes/h] for large home appliances and
heavy equipment and 1–2 [tonnes/h] for small or medium equipment. Line No. I is
equipped with (Hamos 2014):
• Belt conveyors and vibratory feeders
• Chain crusher
• Dust extraction systems
• Pneumatic sieves
• Separators: magnetic, eddy current, and electrostatic
The waste equipment and large assemblies after manual preliminary disassembly
are transferred to the chain crusher. After crushing, the material transfer is with a
vibrating feeder to pneumatic sieves and screens. The processing system is enclosed
in a casing, so that dust formed during the process can be led outside by a pneumatic
de-dusting system. The fraction of the processed material with larger dimensions
not separated by pneumatic sieves goes to the manual sorting station, from which
the components that have not been shredded can be shipped to other plants.
Line No. II is designed to process smaller electronic devices and equipment but
also to crush residues from the No. I system and other sources. A hammer mill is
used for grinding, in order to facilitate the separation of the metal fraction from
other materials at a later stage. Then the waste is screened and dust is removed. The
basic devices in line No. II include:
• Belt conveyors and vibratory feeders
• Hammer mill
• Screening separators
• Electrostatic, magnetic, and eddy current separators
• Gravity separators
The processing steps in line No. II are similar to No. I line, in addition to the
manual sorting station for the separation of unprocessed components. The technical
parameters of the entire system are summarized in Table 2.6. The basic version of
the system stores material fractions after separation in elastic containers (big bags).
It is possible to install conveyors for the transportation of processed material to
containers placed outside the hall.
The equipment containing refrigerants require a different approach than other
large home appliances. The refrigerant must be removed from each piece of waste –
especially from the compressing unit. Disassembly takes place according to the
following steps: after removing the shelves, drawers, glass, and other easily removable elements followed by refrigerant removal with the refrigerant suction system.
Then the aggregate, evaporator, and condenser are removed. The first grinding is
performed on a double shaft shredder, the second on a vertical chain crusher. The
polyurethane foam is drawn off pneumatically using a cyclone separator. Separation
of ferrous metals takes place on a magnetic separator and then on eddy current separator separates nonferrous metals from plastics. For technical data for the cooling
appliances, recycling line is summarized in Table 2.7 (Vary 2018).
2 Reconfigurable Recycling Systems of E-waste