Basically, we are interested to buy :
Minerals and concentrates of Copper, Lead and Zinc : copper Cu 10% min.; lead with min. 50% Pb and zinc with min. 50% Zn.
By products/residues/waste containing : copper (Cu), nickel (Ni), tin (Sn), lead (Pb) and zinc (Zn), as follows :
Zinc Powder (arising from the semi-conductor production), Zinc Ash or Zinc Dust,Zn 60% min. or 90% min.
Lead Ash (arising from the recycling of scrap batteries) with Pb 50% min.
Copper skimming, slag, sludge (arising from the production of copper ingots or cathodes) Cu 15% min,
Brass Ash (arising from the production of brass bars, pipes or tubes) 15% Cu min.
Spent Catalyst (arising from the petroleum industry, containing molybdenum; vanadium; nickel; cobalt; etc.) 8% Mo min; 25% V2O5 min; 15% Ni min; 8% Co min.
Zinc Powder (arising from the semi-conductor production), Zinc Ash or Zinc Dust, Zn 60% min. or 90% min.