The purpose of diploma is to introduce the recycling processes of waste copper cables, as well as the procedures required. Four different forms of copper cables were recycled, with hard, braided, lacquered and insulated copper wire. Through the removal of insulation and chemical analysis after melting of individual samples, data and insightson the concentration of copper in the raw materials and after processes of separation of
PVC insulation were obtained. Based on the cooling curves, I found that the influence of other metallic materials of the examined samples was almost negligible. The presence of PVC insulation on the melted wire significantly reduces the amount of copper melt
obtained. Chemical analysis showed the highest concentration of copper and thus the most suitable, solid form of copper wire for melting. Melting cables with insulation
reduces the efficiency of metal because the fraction of slag in which are also presented drops of metallic copper increases. Environmental pollution is also a problem with the uncontrolled combustion of polymer components of copper wire insulation, which makes the development of insulation removal devices all the more necessary. In this way, melting copper cables without insulation results in the highest quality copper grade
without environmental pollution.
|