Copper scrap is smelted in
primary and secondary smelters. Type of furnace and process steps
depend on copper content of the secondary raw material, other
constituent, size, etc. In the case of oxide scrap material,
reducing conditions are required, which can be achieved through
carbon and iron along with fluxing agents. Depending on the raw
material and process, other metals such as Zn, Pb and Sn can be
recovered from the fume. Depending on the quality/grade of the
scrap, refining is required, which is usually done through
electrorefining.
