Mechanical intelligent finish processing method for separating multiple materials from comprehensive waste plastic

A technology of mechanical intelligence and waste plastics, applied in plastic recycling, mechanical material recycling, chemical instruments and methods, etc., can solve the problems of low purity of waste plastics, high impurities, high labor costs, saving labor costs and low energy consumption , the effect of large processing capacity

Pending Publication Date: 2019-02-22
XIANGNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a mechanical intelligent finishing method for sorting various materials from comprehensive waste plastics, which can be divided Select high-purity, same-color waste plastics

Method used

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  • Mechanical intelligent finish processing method for separating multiple materials from comprehensive waste plastic
  • Mechanical intelligent finish processing method for separating multiple materials from comprehensive waste plastic
  • Mechanical intelligent finish processing method for separating multiple materials from comprehensive waste plastic

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Embodiment 1 A mechanical intelligent finishing method for sorting multiple materials from comprehensive waste plastics, specifically including the following steps:

[0048] S1. Crushing: Crushing waste electrical plastics into sheets, passing through a sieve of 18mm;

[0049] S2. Flotation: Put the material obtained in step S1 into a vibrating fluid shaker separator, add tap water, and separate to obtain floating water and sinking water; then filter the floating water and sinking water separately, leave the filter residue, and use 15% of the filter residue in the sinking water The brine is separated by flotation to obtain floating clear water material and sinking clear water material;

[0050] S3. Magnetic separation: transfer the filter residue and materials obtained in step S2 to a magnetic separation device, and magnetically separate the filter residue and materials in floating clear water and sinking clear water respectively to obtain metal materials, light compone...

Embodiment 2

[0055] Embodiment 2 A mechanical intelligent finishing method for sorting multiple materials from comprehensive waste plastics, specifically includes the following steps:

[0056] S1. Crushing: Break the waste electrical plastics into sheets, and pass the screen through 20mm;

[0057] S2. Flotation: Put the material obtained in step S1 into a vibrating fluid shaker separator, add tap water, and separate to obtain floating water and sinking water; then filter the floating water and sinking water respectively, leave the filter residue, and use 35% of the filter residue in the sinking water The calcium chloride solution is separated by flotation to obtain floating clear water material and sink clear water material;

[0058] S3. Magnetic separation: transfer the filter residue and materials obtained in step S2 to a magnetic separation device, and magnetically separate the filter residue and materials in floating clear water and sinking clear water respectively to obtain metal mate...

Embodiment 3

[0063] Embodiment 3 A mechanical intelligent finishing method for sorting multiple materials from comprehensive waste plastics, specifically including the following steps:

[0064] S1. Crushing: Break the waste electrical plastics into sheets, and pass the screen through 20mm;

[0065] S2. Flotation: Put the material obtained in step S1 into a vibrating fluid shaker separator, add tap water, and separate to obtain floating water and sinking water; then filter the floating water and sinking water separately, leave the filter residue, and use 20% of the filter residue in the sinking water The brine is separated by flotation to obtain floating clear water material and sinking clear water material;

[0066] S3. Magnetic separation: transfer the filter residue and materials obtained in step S2 to a magnetic separation device, and magnetically separate the filter residue and materials in floating clear water and sinking clear water respectively to obtain metal materials, light compo...

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Abstract

The invention discloses a mechanical intelligent finish processing method for separating multiple materials from comprehensive waste plastic. Through smashing, flotation, magnetic separation, cleaning, friction, electrostatic separation, color sorting separation and other process steps, the multiple materials in the comprehensive waste plastic are separated, and high-purity metal materials, high-purity plastic and high-purity same-color plastic are obtained. Through the separation method provided by the invention, mutual mingling of metal and plastic of similar specific gravity and density isavoided effectively, the metal materials and plastic materials can be classified and separated into single metal and same-color plastic to be collected, purity can reach 99% or above, the various mixed plastic materials can be separated into single materials once, the purity is 99% or above, and separation of the high-purity plastic and metal is ensured effectively. Meanwhile solution and reagentsused in the mechanical intelligent finish processing method are simple in component, safe and environmentally friendly, all solvents can further be recovered and recycled after flotation separation,and environmental protection and energy saving are achieved.

Description

technical field [0001] The invention relates to the technical field of material sorting, more specifically, to a mechanical intelligent finishing method and a sorting system for sorting various materials from comprehensive waste plastics. Background technique [0002] With the development of our country's social economy, the amount of scrapped electronic and electrical products is increasing year by year. Because waste electronic and electrical products contain a large amount of renewable resources such as gold, silver, copper, and plastics, plastics are a relatively large content of electrical and electronic products. Such raw materials are usually recycled in two ways. One is to sort and classify waste plastics, add modifiers, plasticize, extrude, etc. to make recycled plastic particles for subsequent injection molding or other deep processing and utilization; the other One way is to pyrolyze waste plastics to obtain pyrolysis oil, which can be used as fuel or chemical raw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B17/04B29B17/02B03B7/00B03B9/06
CPCB03B7/00B03B9/06B29B17/02B29B17/04B29B2017/0203B29B2017/0224B29B2017/0227B29B2017/0244B29B2017/0265B29B2017/0272B29B2017/0289Y02W30/52Y02W30/62
Inventor 李曦李立新李煜民刘姜华周倩侯兰芬陈思行曾向农
Owner XIANGNAN UNIV
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