線纜的回收就是采用一定的技術手段，使導體和外皮脫離，然后采用分選技術把導體和外皮分選開，得到較純凈的金屬與塑料等，從而達到資源化的目的。 The recycling of cable is to use certain technical means to disengage the conductor and the outer skin, and then use the separation technology to separate the conductor and the outer skin, and get a more pure metal and plastic and so on, so as to achieve the purpose of resource. 常用方法有：焚燒法 The common methods are: incineration method 焚燒法一般是利用電線電纜中塑料的可燃性，采用焚燒的方法來回收電線電纜中的金屬。這是一種早期原始的金屬回收方法，現已被國家明令禁止，是一種被淘汰的金屬回收方法。 Incineration usually takes advantage of the combustibility of plastics in wires and cables, and uses incineration to recover metals from wires and cables. This is an early primitive metal recovery method, which has been banned by the state and is a metal recovery method that has been eliminated. 剝線法 Stripping method 該種方法對于大直徑的線纜的拆解在工廠中應用較廣泛。自動剝線機工作原理如下圖所示，右滾輪步進電機帶動上、下右滾輪將夾持的被加工線左右移動；裁刀步進電機帶動上、下兩裁刀向相反方向運動，通過控制上、下裁刀之間的位移，實現剝皮和裁線的功能； This method is widely used in factories for the disassembly of large diameter cables. The working principle of the automatic stripping machine is shown in the following diagram. The right wheel stepping motor drives the upper and lower right rollers to move the clipped machined line, and the cutter stepping motor drives the upper and lower two cutting tools to move in the opposite direction, and realizes the function of peeling and cutting by controlling the displacements between the upper and the lower cutting tools. 左滾輪步進電機帶動上、下左滾輪將夾持的被加工線左右移動；扭線輪步進電機帶動上、下左滾輪向相反方向前后運動，實現扭線功能。其中扭線輪與左滾輪在物理上是指同一滾輪。 The left roller stepping motor drives the upper and lower left rollers to move the clipped machined line, and the twisting wheel step motor drives the upper and lower left rollers to move to the opposite direction, and realizes the twisting function. The torsion wheel and the left roller refer to the same roller in physics. 該種方法針對大直徑的線纜的拆解有較好的效果。但由于其人工依靠性強，針對中小直徑線纜的生產效率太低，自動化程度差，對線纜的類型的分選性差。 The method is effective for the disassembly of large diameter cables. However, because of its strong manual dependence, the production efficiency of small and medium diameter cables is too low, and the degree of automation is poor. 低溫破碎法 Cryogenic crushing 韌性物料在破碎加工時會呈現各種塑性、粘性和彈性行為。一般認為顆粒的破碎主要受以下三個因素的影響：溫度、沖擊速度、粒度，這三個變量控制著破碎的發生和破碎程度。低溫破碎的基本原理就是利用制冷技術使物質發生改性脆化而容易被破碎。 Ductile materials exhibit various plastic, viscous and elastic behavior during crushing. It is generally believed that the crushing of particles is mainly affected by the following three factors: temperature, impact velocity and particle size, and these three variables control the occurrence and degree of breakage. The basic principle of low temperature crushing is to use refrigeration technology to make materials brittle and easy to be broken. 低溫破碎技術最早實現工業化是在1948年，目前常用的制冷方法有2種:一是制冷劑制冷，二是空氣膨脹制冷。 The cryogenic crushing technology was first industrialized in the 1948. There are 2 commonly used refrigeration methods: refrigerant cooling, and air expansion refrigeration two. 目前，低溫破碎技術在廢舊電路板、廢舊線纜的破碎中得到了較好的應用，在液氮冷卻下，廢舊電路板、廢舊線纜變脆，很容易粉碎，但是低溫破碎液氮冷卻裝置成本較高。 At present, the crusher technology has been well applied in the breakage of waste circuit board and waste cable. Under the cooling of liquid nitrogen, the waste circuit board and the waste cable are brittle and easy to crush, but the cost of the cryogenic liquid nitrogen cooling device is high. 機械破碎分選法 Mechanical crushing and sorting method 機械破碎法主要包括破碎和分選兩個單元。廢舊線纜經破碎單元被分解成一定尺度的顆粒單元，然后經分選單元把銅和塑料分選開從而得到純凈的銅和塑料。 Mechanical crushing includes two parts: crushing and sorting. The waste cable is broken into a certain size unit through the crushing unit, and then the copper and plastic are separated by sorting unit to get pure copper and plastic.