Centrifugal extraction machine extraction recovery of zinc process
The pickling waste liquor from the production of galvanized sheet usually contains a large number of zinc chloride, centrifugal extraction machine extraction recovery of zinc process, as shown in the first place make zinc waste liquid by continuous ion exchange column separation zinc chloride, zinc removal solution after hydrolysis to produce Feo in the spray roaster and HCl gas.
The dilute solution of zinc chloride ion exchange desorption, by solvent extraction into thick zinc sulfate solution to electrolytic zinc.
Solvent extraction of extracted residue (
Dilute hydrochloric acid solution)
Used for absorption of hydrogen chloride produced spray roaster.
Centrifugal extraction machine extraction recovery of zinc process advantage does not produce waste, can be effectively in the recovery of zinc from the zinc waste liquid and waste acid.