Worn-out electrical wires and cables must be processed after collection. This process includes separating aluminum and copper cores, as well as separating various sizes of cables. Then, the iron sheets or wires are removed, followed by using a special wire stripping machine to strip the outer sheath and separate the metal from the plastic. Subsequently, a static separator is employed to break down the mixture, utilizing the different electrical properties of metals and plastics to separate out copper, aluminum, and other metals.
What are the factors for improving cable quality in cable recycling analysis?
The wire and cable industry is a crucial foundational sector of the national economy, widely used across various departments. It provides essential support to industries, national defense construction, and major infrastructure projects, serving as the foundation for the normal operation of the current economy and society, and an indispensable product in the daily lives of the people. Therefore, the quality of wire and cable products directly affects economic and social development and the vital interests of the public. Currently, with the collective efforts of the industry, significant achievements have been made in enhancing the quality of wire and cable products across the nation. However, while celebrating our successes, we must also remain aware that the quality situation in the wire and cable industry remains concerning, and there is still a long way to go in the quality improvement efforts. The industry continues to advance in this endeavor with unwavering determination.
After years of efforts, China's cable industry has surpassed a trillion yuan in output value, becoming the second largest industry after the automotive industry, with an annual production capacity exceeding that of the United States, placing it among the world's major cable-producing countries. Achieving these accomplishments is naturally attributed to the support during the "Twelfth Five-Year Plan" period and the joint efforts of all related industries across the nation. Over the past fifteen years, the economic rise of countries centered around China, along with the surge in demand for cables, has led to an increase in the scale of cable production. Looking at the domestic industry's development to date, as of spring, China's cable industry remains large in volume but low in quality, starkly contrasting with the high-cost copper-core insulated wire models used internationally. Domestically, costs are low, with over 95% of the market consisting of small and medium-sized enterprises, while state-owned and large enterprises' products account for less than 15% of the market share. The low rate of industry integration has become an urgent issue.
Now, as life progresses and cities evolve, the electricity sector has reached a peak. Thus, the use of cables is no longer a matter of numbers. Since they are in use, wear and tear occur, leading to the growth of the cable recycling industry.
Below, we will discuss the various methods for recycling and reusing scrap cables.
Section 1: Chemical Method
This method involves dissolving the insulation of废旧电缆 to achieve separation of the 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 challenging, 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, and then separates the plastic sheath from the copper wire segments through crushing and shaking. However, the drawback of this method is that it is costly and difficult to industrialize production.
