Device and method for recycling and separating waste mixed plastics

Abstract

The invention discloses a waste and old mixed plastic recovery and separation device and method, and belongs to the field of resource recycling of waste and old mixed plastic. The waste and old mixed plastic recovery and separation device comprises a crushing device and a melting, sorting and recovering device, wherein a material feeding mechanism, a crushing mechanism and a material discharging mechanism are arranged in a crushing box body of the crushing device; a heating device, a screening mechanism and a plastic molding mechanism are arranged in a melting box body of the melting, sorting and recovering device; the heating mechanism is used for heating crushed granular materials to a molten state in a staged way; the screening mechanism is used for separating the materials in the molten state and un-melted granular materials; the plastic molding mechanism is placed on the bottom of the melting box body and recycling the separated materials in the molten state. The recovery and separation device can effectively classify the waste and old plastic generated in daily life and industrial production; different plastics are separated and are made into a single plastic which is relatively pure, so that the resource utilization of the waste and old plastic is realized; the post-processing process is omitted; energy resources are saved; the operation is simple; the automation degree is high; the sorting degree is high; the sorting range is wide.

Description

technical field [0001] The invention belongs to the field of resource recycling of waste and old mixed plastics, and in particular relates to a recycling and separation device and method for waste and old mixed plastics. Background technique [0002] Plastic products have changed our production and lifestyle, and the problem that arises is that a large number of waste plastics pollute the environment and cause a huge waste of resources. These wastes generally become a part of domestic waste and industrial waste, such as granular mixtures produced by industrial grinding, waste mixed with various plastics, waste electrical appliances and electronic mixtures, and these mixtures are scattered due to improper handling. Second, it has caused serious harm to the environment. According to statistics, my country's annual production of waste plastics is about 1 million tons, accounting for about 70% of plastic production. The amount of waste plastics produced is so large, but the cu...

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