Method for recycling waste plastic of paper mill

Method for recycling waste plastic of paper mill

  • CN 105,479,621 A
  • Filed: 12/16/2015
  • Published: 04/13/2016
  • Est. Priority Date: 12/16/2015
  • Status: Active Application
First Claim
Patent Images

1. a method for paper mill waste plastics recovery utilization, is characterized in that, comprise following process:

  • (1) broken;

    paper mill waste plastics is pulverized;

    (2) cleaning classification;

    the paper mill waste plastics after step (1) being pulverized adopts cyclone hydraulic separators to carry out cleaning and obtains TPO plastics;

    (3) lime slurry process;

    the described polyolefin plastics that step (2) obtains is carried out lime slurry process, to remove the part of aluminizing in described polyolefin plastics;

    (4) solvent reprocessing;

    the polyolefin plastics of step (3) after lime slurry process is undertaken being separated by solvent, purifying;

    (5) depainting;

    use paint stripper to carry out immersion depainting the polyolefin plastics of step (4) after solvent reprocessing;

    (6) granulation;

    by the polyolefin plastics melting after step (5) depainting process, extrude, granulation.

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