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Cable recycling methods and introduction:
Mechanical Crushing and Separation Method
The mechanical crushing method mainly consists of two units: crushing and sorting. Waste cables are decomposed into particles of a certain size by the crushing unit, and then separated into pure copper and plastic by the sorting unit.
Waste cables are conveyed to the primary crusher (triangular knife type) via a feeding conveyor belt. The primary crushing products are then magnetically separated to a separator screen, where larger particles are sent to copper rice crusher 1 and smaller particles to copper rice crusher 2. The crushed materials are then spirally conveyed to a vibrating screen, with a blower at the bottom of the screen.
Materials are separated into four components by wind vibration: copper beads and plastic are collected separately, while the uncrushed particles and the mixture of copper beads and plastic are returned to the corresponding stages for recycling crushing and separation.
剥线法 - Wire Stripping Method
This method is widely used in factories for dismantling large-diameter cables. The working principle of the automatic stripping machine is as shown in the diagram below: The right roller stepper motor drives the upper and lower right rollers to move the clamped cable left and right; the cutting blade stepper motor drives the upper and lower cutting blades to move in opposite directions, and the stripping and cutting functions are achieved by controlling the displacement between the upper and lower cutting blades.
The left roller stepper motor drives the upper and lower left rollers to move the clamped workpiece line left and right; the twisting roller stepper motor drives the upper and lower left rollers to move forward and backward in the opposite direction, achieving the twisting function. The twisting roller and the left roller refer to the same roller physically.
This method is effective for disassembling large-diameter cables. However, due to its heavy reliance on manual labor, it has low production efficiency for cables with medium and small diameters, poor automation, and limited cable type sorting capabilities.
Section 3: Incineration Method
Incineration typically involves utilizing the flammability of the plastic in wires and cables to recycle the metal through burning. This is an early, primitive method of metal recovery that has been phased out!
The cable recycling process involves using specific techniques to separate the conductor from the sheath, followed by sorting technology to separate the conductor and sheath, resulting in relatively pure metals and plastics, thereby achieving resource utilization.
