Zinc recovery from furnace dust

Details Zinc recovery from furnace dust Zinc recovery from furnace dust

C - Chemistry, Metallurgy

22

B

53/321

C22B 5/16 (2006.01) C01G 9/04 (2006.01) C01G 11/00 (2006.01) C01G 21/16 (2006.01) C22B 7/02 (2006.01) C22B 19/30 (2006.01)

Patent

CA 1282965

ABSTRACT 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.

514135

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