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NewsHome > News >

Copper rice sorting and purification

Time:2020-08-12 11:36 Author:Suny Group

Copper recovered from copper cables is a rare metal resource with high value. But the recycled copper usually contains cable sheath, iron metal, and a small amount of lead, brass or aluminum, and the content of these impurities is usually as high as 3%. If the photoelectric separation technology is used to increase the purity of copper particles to 99.9%, the material value will increase by 30%.

Recovery of high-purity copper particles from cables: a potential profit margin that cannot be ignored

The main components of electric wires and control wires are PVC sheath and copper core. There are also wires mixed with copper, aluminum, lead and other metals. Only by separating the outer skin of the wire from the inner metal can it have the value of recycling and reuse. However, because these control lines are uneven in thickness and chaotic, it is difficult to separate the inner and outer materials. Some small recycling companies will incinerate the outer layer of PVC to obtain the inner copper wire, but this approach not only pollutes the environment, but also wastes PVC plastic.

At present, the cost-effective and low-polluting method is to use a copper-plastic separator to smash various wires, and then separate the PVC particles from the copper-based metal particles. The whole process will not change the properties of the material, nor will it cause secondary pollution.

Even if impurities, polymers and iron metals are removed from the pellets, it still contains a small amount of lead, brass or aluminum, and the content of these impurities is usually as high as 3%. If the purity of the copper particles is increased to 99.9%, the material value will increase by 30%. Therefore, it is very important to further remove impurities from copper rice.

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