Spent Catalyst : Vanadium, Molybdenum, Nickel, Copper, Zinc, Tungsten.
ammonium Metavanadate, Ferro Vanadium, Ferro Molybdenum, Calcium Molybdate, Molybdenum Oxide, Casting Powder, Synthetic Slag, Ferro Tungsten, Calcium Tungstate, Vanadium Pentoxide.