Nickel catalyst waste.
Copper like copper ore, concentrate, copper slag, copper dross, copper dust, copper oxide, and copper sulphate, zinc like zinc ash, zinc dross, zinc oxide, eaf dust, zinc ore and concentrates, lead like lead ash, lead dross, lead ore, lead concentrate and lead sulphate, aluminium dross, galvalume dross, nickel like 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.