METHOD AND SYSTEM FOR RECOVERING COPPER FROM AUTOMOBILE SHREDDER RESIDUE

摘要

Processing copper wire concentrate produced from processing ASR to generate a bare copper product. The disclosed systems and methods employ processes that remove constituents from the copper wire concentrate that can damage conventional chopping equipment. After removing the constituents that can damage conventional chopping equipment, the process employs a grinder to grind the remaining copper wire to liberate the bare copper metal from the insulation material.

主权项

1. A method for recovering bare copper metal from an ASR copper wire concentrate comprising steps of:
receiving ASR copper wire concentrate comprising a copper wire component and a non-copper metal component, the copper wire component comprising copper metal and an insulation material, wherein the non-copper metal component has a density greater than the density of copper, a hardness value greater than a hardness value of copper, or a thickness greater than the thickness of the copper wire component; processing the ASR copper wire concentrate in a shredder to produce shredded ASR copper wire concentrate; separating the shredded ASR copper wire concentrate into a light fraction and a heavy fraction using an air classifier, wherein the light fraction comprises the copper wire component and wherein the heavy fraction comprises the non-copper metal component; and processing the light fraction in a grinder to liberate the copper metal of the copper wire component from the insulation material.