Here are the methods for recycling and reusing scrap cables explained.
Section 1: Chemical Method
This method involves dissolving the insulation of scrap cables to achieve the separation of copper wire from the insulation. The advantage is that it yields excellent copper wire, but the drawback is that the treatment of the solution is quite difficult, and the cost of the solvent is high.
Section II: Refrigeration Method
This method uses liquid nitrogen as a refrigerant to make the waste cables脆 at extremely low temperatures, then separates the plastic sheath from the copper wire segments through crushing and vibration. However, the drawback of this method is that it is expensive and difficult to industrialize production.
Now, China's per capita resource ownership is not optimistic, even threatening the survival and development of future generations. This requires us to adhere to the core concept of the scientific outlook on development, people-centered, and conserve resources. With the advancement of technology and the development of society, the use of cables is rapidly increasing, but behind this lies the issue of resource waste that cannot be ignored. There is no doubt that the recycling of waste cables is a crucial step in resource conservation.
Waste cables refer to those that have been retired and are no longer usable. These include cables that have been damaged by high current and voltage flow, as well as those that are unusable due to mishaps during production and processing. Such cables are commonly referred to as waste cables or scrap cables.
Cables and wires are categorized by voltage grades.
1. Low-voltage Cable: Suitable for fixed installation on transmission and distribution lines with an AC frequency of 50Hz and rated voltage of 3kV or below, used for transmitting electrical power.
2. Medium and low voltage cables (generally 35KV and below): Polyethylene insulated cables, polyethylene insulated cables, cross-linked polyethylene insulated cables, etc.
3. High-voltage Cables (usually 110KV and above): Polyethylene cables and cross-linked polyethylene insulated cables, etc.
4. Extra-high voltage cables: (275-800 kV)
5. Ultra-high voltage cables: (1000 kV and above)
