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Water flotation regeneration process of agricultural waste plastics

A technology for waste plastics and agriculture, which is applied in the field of water flotation regeneration technology for agricultural waste plastics, can solve problems such as difficult separation and regeneration, and achieve the effects of facilitating popularization and application, reducing errors, and improving utilization rates

Active Publication Date: 2011-01-12
GANSU DAYU WATER SAVING
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AI Technical Summary

Problems solved by technology

Most of the waste plastics used in agriculture are polyolefins, but similar products use different materials and shapes. The density and charging properties of plastics are similar, so it is difficult to sort and regenerate after recycling. According to the different properties and impurities of plastics, research It is necessary to design a sorting method for waste plastics in the rural market

Method used

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Embodiment Construction

[0017] A water flotation regeneration process for agricultural waste plastics, comprising the following steps:

[0018] (1) Agricultural waste plastics are collected by various purchasing points and transported to processing plants in a centralized manner.

[0019] Sorting of waste plastics: Before processing, it is first necessary to manually sort waste plastics of different types and materials, especially to sort waste plastics according to the type of products, such as agricultural films, drip irrigation pipes, pipes, For pipe fittings, etc., the broken and unidentifiable ones can be classified according to their approximate shape, wall thickness, color, etc., and other sundries mixed in waste plastics are sorted out at the same time to ensure the purity of plastic particles.

[0020] Cutting and crushing: According to the sorting category, the larger waste plastics in the shape of tubes, blocks, strips, sheets, etc. are cut and processed. Generally, they are cut into lengt...

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Abstract

The invention relates to a water flotation regeneration process of agricultural waste plastics, comprising the following steps: (1) the agricultural waste plastics are sorted, cut, crushed and pulverized to obtain waste materials after classification treatment; (2) the waste materials after classification treatment are circularly washed in a cleaning pool to obtain clear waste materials and sewage, and then the sewage is discharged into a purification tank, filtered and then recycled; (3) the clear waste materials are dehydrated and then enter a water flotation separation device for flotationseparation to obtain a floating object and precipitate; and (4) the floating object obtained in step (3) is filtered with a sieve, lifted and dried and then enters a granulator and a pelletizer sequentially to obtain plastic A regeneration particles with diameter of 0.5cm and uniform size, and the precipitate is dried, mechanically grinded and filtered with the sieve to obtain plastic B regeneration powder with fineness of 20 mesh sieve. The water flotation regeneration process has convenient operation and high separation efficiency, reduces errors of manual identification according to materials and improves utilization ratio of the regeneration plastics.

Description

technical field [0001] The invention relates to a method for recycling waste plastics, in particular to a water flotation regeneration process for agricultural waste plastics. Background technique [0002] With the development of agricultural technology, the consumption of agricultural plastic products is also increasing, and the waste plastic is also increasing. At present, my country's agricultural waste plastics are mainly plastic shed film, mulch film, water-saving pipes, plastic silk, woven bags, plastic bags, etc. If the storage, transportation, processing, application and post-processing of these waste plastics are not done properly, it will definitely damage the environment and endanger the health of the people. [0003] Recycled plastics are different forms of plastics that still have recycling value after their service life ends. Almost all agricultural plastic products have recycling value. Most of the waste plastics used in agriculture are polyolefins, but simi...

Claims

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Application Information

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IPC IPC(8): B29B17/02B03B5/30
CPCB29B17/02B29B2017/0244Y02W30/52Y02W30/62
Inventor 王栋薛瑞清田小红
Owner GANSU DAYU WATER SAVING
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