Buyer: Copper: copper ore, concentrate, copper slag, copper dross, copper dust, copper oxide, and copper sulphate zinc: zinc ash, zinc dross, zinc oxide, eaf dust, zinc ore and concentrates lead: lead ash, lead dross, lead ore, lead concentrate and lead sulphate. aluminium dross, galvalume dross nickel: nickel slag, nickel sludge, nickel dross, nickel catalyst 3d printing powder (used) anode carbon blocks vanadium vanadium pentaooxide slag vanadium pentaoxide spent catalyst vanadium pentaoxide sludge titanium slag titanium gr7 and gr11 scrap board titanium turnings