Lead industry
Among the many products originating from lead industry, Umicore Precious Metals Refining processes:
PbCu-dross
PbCu-mattes
speiss (a complex combination of any of the elements Pb, Cu, Ni, As, Sb and Sn)
precious metals containing doré slags
flue dusts
residues with typical metal value
In primary lead industry the impurities...