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machines. Vibratory feeders will distribute material onto transferring conveyor from
the outlet of shredders or hammer mills. An automated recycling line should be
equipped with the following separators:
• Ferrous metals separator
• Eddy current separator
• Gravity separator
• Screening separator
The supply of the waste electrical and electronic equipment should be constant;
otherwise, such plant could bring losses. A case study presented in this chapter is
designed to process E-waste stream from one million households. On the average,
the mass of waste equipment collected from one household is 30 kg/year. To calculate this value, the expected value of the life of each product has been included
(Cooper 2004; Nowakowski 2016). The plant productivity is set to 30.000 [tonnes/
year] for two shifts for 300 days a year, and it is sufficient to process equipment
from one million households.
Considering different categories of E-waste and methods of disassembly, the
plant should be equipped with the following installations to achieve the assumed
processing efficiency:
• The line for processing cooling and air-conditioning equipment with a capacity
of 35–40 units/h
• The line of disassembling flat television sets and monitors – 50 items/h
• The line for the processing of small equipment together with the casings and
components of large home appliances after manual dismantling
• Manual dismantling station equipped with the necessary tools
• A machine for cable recycling
The required number of employees and the total mass of E-waste belonging to
an individual category are shown in Table 2.5. It includes estimated waste stream
from households, disassembly, and handling time for each category of waste
(Nowakowski 2015).
Figure 2.4 shows manual disassembly section of the plant. It is fully configurable
and other stations can be set up additionally. After manual dismantling section waste
equipment should be transferred to an automated processing system. The main purpose is to prepare waste equipment to be transferred to the automated section of the
processing system.
E-waste delivered to the plant would be subjected to initial disassembly carried
out manually using basic tools. It will take place on specially adapted steel tables of
high resistance to damage and loads. The stands will be equipped with pneumatic
and electric tools needed for disassembly, as well as cutters, pliers, etc. During the
initial dismantling of waste equipment, elements containing toxic or hazardous
substances (e.g., batteries, mercury switches, electrolyte capacitors) should be
removed. Such components have to be stored in separate containers, and then they
will be transferred to plants specializing in their disposal.
P. Nowakowski
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