Zinc oxide recovery process

Details Zinc oxide recovery process Zinc oxide recovery process

C - Chemistry, Metallurgy

22

B

53/354

C22B 7/02 (2006.01)

Patent

CA 1037262

ABSTRACT Method for the selective recovery from a number of industrial waste material of various components, including zinc, copper, lead and iron, comprising the steps of leaching the waste material with an ammonium chloride solution maintained at an elevated temperature, separating the undissolved iron component from solution, treating the solution with zinc metal to displace the copper and lead from the solution, and cooling the solution to precipitate therefrom the zinc component as zinc oxide.

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