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废旧线缆是一种可以回收利用的资源。目前普遍使用机械破碎方法回收废旧线缆,具体工艺是采用机械磨削的方法分离铜和绝缘皮,然后用筛分法获得。由于此工艺中包含有磨削过程,因此会损失很大一部分铜,从而造成资源浪费。为此,研究使用超声波工艺回收电线,并探讨一些因素对分离率的影响。研究结果表明:利用超声波的空化效应分离电线中的金属和塑料,能有效避免铜的大量损失。当水温为60℃,分离率达到最高值;电线长度与分离率之间基本成反比关系;电线总量的大小对分离率也有一定的影响。
Waste cable is a recyclable resource. The current widespread use of mechanical crushing recovery of waste cables, the specific process is the use of mechanical separation of copper and insulation grinding, and then obtained by screening. Due to the grinding process involved in this process, a significant portion of the copper is lost, resulting in a waste of resources. To this end, the study of the use of ultrasonic recovery wire, and explore the impact of some factors on the separation rate. The results show that the use of ultrasonic cavitation to separate the metal and plastic in the wire can effectively avoid the large copper loss. When the water temperature is 60 ℃, the separation rate reaches the highest value; the length of the wire is basically inversely proportional to the separation rate; the size of the total wire also has a certain impact on the separation rate.