Method of recycling waste thin cables

Abstract

The invention belongs to the technical field of waste cable treatment, and particularly relates to a method of recycling waste thin cables. The method comprises the following steps of: (1) winding a waste thin cable into a bundle and conducting standing for not less than 24 hours, (2) cutting off the waste thin cable which is wound into the bundle section by section to obtain cut-off waste thin cables, then transferring the cut-off waste thin cables into a centrifugal machine to separate plastic wire sheaths from metal wire cores, wherein the length of the cut-off waste thin cable is less than0.5 cm. By winding the waste thin cable into a bundle, certain stress can be formed between the plastic wire sheath and the metal wire core, certain space is formed at the critical position of the plastic wire sheath and the metal wire core to facilitate separation of the plastic wire sheath and the metal wire core, the waste thin cable wound into the bundle can be conveniently cut off to form short and small waste thin cables, the plastic wire sheaths and the metal wire cores are separated by utilizing the centrifugal force of the centrifugal machine, and thus, the plastic wire sheaths and the metal wire cores can be respectively obtained, and the waste thin cable can be recycled.

Description

technical field [0001] The invention belongs to the technical field of waste and old cables, in particular to a recycling method for waste and old thin cables. Background technique [0002] Wires and cables are wire products used to transmit electric (magnetic) energy, information and realize the conversion of electromagnetic energy. In a broad sense, wires and cables are also referred to as cables for short. In a narrow sense, cables refer to insulated cables, which can be defined as consisting of one or more insulated cables. A collection of wire cores, their respective possible covering layers, the total protective layer and the outer sheath. [0003] With the continuous development of technology, in order to obtain the metal contained in wires and cables and avoid the impact of waste cables on the ecological environment, the recycling of waste wires and cables has gradually been paid attention to. The existing technologies include burning, peeling, crushing, freezing, et...

AI Technical Summary

Problems solved by technology

[0003] With the continuous development of technology, in order to obtain the metal contained in wires and cables and avoid the impact of waste cables on the ecological environment, the recycling of waste wires and cables has gradually been paid attention to. The existing technologies include burning, peeling, crushing, freezing, etc. To deal with waste wires and cables; Among them, burning is a relatively traditional method, which uses the characteristics of burning waste wire and cable sheath to directly burn it, and then recycles the metals inside, such as copper; however, the method of burning is not only easy Causes environmental pollution, and in the process of incineration, the surface of the metal wire will be oxidized, resulting in a decrease in the metal recovery rate; more and more flame retardants are added to the cable material, so it is more laborious to incinerate

The method of peeling treatment is often only suitable for wires and cables with larger diameters. For wires and cables with thin diameters, such as network cables and electronic wires, the existing wire stripping machine equipment is often difficult to apply

The crushing method is to peel the waste wires and cables by crushing them, and then use water washing or air flow differentiation to separate metals and plastics by electrostatic separation. This method is applicable to a wide range of applications. differentiation, high energy consumption

The freezing method uses liquid nitrogen as a refrigerant to freeze waste wires and cables at ultra-low temperatures and become brittle, and then undergo crushing and vibration to separate plastics and metals. However, this treatment method is expensive and difficult to operate on a large scale. , and have not been put into actual production