ZINC RECOVERY FROM FURNACE DUST

摘要

ZINC RECOVERY FROM FURNACE DUST Zinc and other metals are recovered from strongly bound zinc ferrite compounds in furnace dust. To the dust is added 1 weight percent of free zinc oxide unless already present. The dust is treated for 1 hour at 750C with a 20:1 air:chlorine mixture whereby the zinc, lead and cadmium are removed from the dust as volatilised chloride.