A large quantity of cable scrap usually needs a complete line to accomplish the copper recycling work. Do you know the complete cable granulating process? If you do not know this point, let me tell you!
It includes five steps: pre-sorting, cable chopping, granulation, screening and density separation.
The pre-sorting refers to the separation of long cable sections, type of insulation, conductor diameter, plated or unplated conductor, densely baled cable, and pieces of ferrous and non-ferrous metal from loose cable. More importantly, pre-sorting includes sorting copper cables from aluminum- containing cable. Pre-sorting can maximize the value of metal scrap and make further separation of plastics easier.
Cable chopping is usually needed in large plants but selectable in smaller plants and is usually desirable for processing long cable sections. It is the first step in reducing the size of the cable scrap.
In this plant, cable scrap needs to undergo two granulating process. In the primary granulator, stripping of the insulator and jacketing is only partially achieved, which the cable chops are typically about 7-8 cm while the maximum length of granule produced by the secondary granulator is about 0.6 cm. Such fine granulating usually liberates most of the insulation from the cable but inevitably small amounts of metal left in the plastics.
Screening is mainly used to enhance the recovery of metal; some chopping lines also use screening to get the desired chop size. The smaller the size of granule, the more efficient the removal of metal is.
Similar-size granulators that collect on the screen are then discharged and fed to an air table that is slanted in two directions. After this process, we can get clean metal product and essentially metal-free tailings.
If you need other guide, please visit Whirlston, a top manufacturer of copper cable granulator and wire stripping machine.