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Method and apparatus for separating plastic

A sorting device and plastic technology, applied in plastic recycling, chemical instruments and methods, solid separation, etc., can solve problems such as insufficient sorting

Inactive Publication Date: 2001-09-12
HITACHI ZOSEN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, in this case, the sorting in the metal roller electrode 5 or the high voltage electrode 6 that utilizes the charge of the plastic sheet 1 for sorting cannot be performed sufficiently

Method used

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  • Method and apparatus for separating plastic
  • Method and apparatus for separating plastic
  • Method and apparatus for separating plastic

Examples

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no. 1 example

[0023] Hereinafter, embodiments of the present invention will be described based on the drawings. First, the first embodiment of the present invention will be described. The plastic sorting device S includes a hopper 2, a friction charging device 3, an electrostatic separation part G, a first separation container 8 and a second separation container 9. The hopper 2 is used to put plastic pieces (sorted and crushed garbage) 1 of different resins in a mixed state of a plurality of types. The frictional charging device 3 described above is arranged on the side of the outlet 2a of the hopper 2 and is used for frictionally charging each plastic sheet 1 by stirring. The electrostatic separation part G is arranged below the frictional charging device 3 and is used to electrostatically separate a plurality of types of frictionally charged plastic sheets 1. The first separation container 8 and the second separation container 9 described above collect the plastic sheet 1 electrostatically se...

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PUM

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Abstract

The invention provides a plastic sorting method and apparatus, which, when plastic pieces comprising a plurality of types of resin plastics are agitated and frictionally charged, are able to impart the plastic pieces a necessary amount of charge or polarity for the thorough separation even if the difference in the amount of the different types of plastic pieces is large and to increase the recovery rate. If the amount of a specified type plastic pieces(1)to be recovered is small, the agitation and the electrostatic separation is carried out after adding the specified type plastic pieces(1)as auxiliary frictional charging material(21)into the frictional charging device(3), and the auxiliary frictional charging material(21)remains in the frictional charging device(3)and is used repeatedly.

Description

Technical field [0001] The invention relates to a plastic sorting method and a plastic sorting device for sorting sorted and crushed garbage composed of mixed multiple plastic sheets into each type. Background technique [0002] In recent years, the recycling of garbage has been rapidly promoted. However, plastics that are consumed as raw materials for plastic products include polyvinyl chloride resins (hereinafter referred to as "PVC"), polyethylene resins (hereinafter referred to as "PE"), and polypropylene resins (hereinafter referred to as "PP") , Polystyrene resin (hereinafter referred to as "PS") and acrylic resin (hereinafter referred to as "PMMA") account for 80% of the total, and most of the recycled waste plastics are these resins. In addition, polyethylene terephthalate resin (hereinafter referred to as "PET") used as a so-called plastic bottle is also independently packed. In addition, when recycling these resins, it is important to sort each resin type. [0003] Furt...

Claims

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Application Information

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IPC IPC(8): B03C7/00B03C7/06B29B17/02
CPCB29K2027/06B03C7/006B29K2105/251B29K2023/12B29K2023/06B29B2017/0203B03C7/06B29K2067/00B29K2025/00B29B17/02B29B2017/0265Y02W30/52Y02W30/62B03C7/02
Inventor 前畑英彦井上铁也荒井浩成原正德玉越大介长井健一
Owner HITACHI ZOSEN CORP
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