Zinc recovery from steel plant dusts and other zinciferous mater

Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge

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Details

204128, 204103, 75101BE, 75114, 75120, 75121, 423100, 423140, 423 94, C25B 122

Patent

active

045727716

ABSTRACT:
A process is provided for recovering zinc from zinc residues containing iron, and lead. The residue is leached with hydrochloric acid to provide a pregnant liquor containing zinc, iron, and lead. The iron is selectively removed from the pregnant liquor and the zinc extracted from the liquor by an organic solvent extraction system. The zinc is subsequently stripped from the organic solvent using water or hydrochloric acid to provide a zinc chloride solution which is then fed to an electrowinning cell for the production of marketable electrolytic zinc.

REFERENCES:
patent: 4233273 (1980-11-01), Meyer et al.
patent: 4401531 (1983-08-01), San Lorenzo et al.
patent: 4421616 (1983-12-01), Bjune et al.
patent: 4465569 (1984-08-01), Bjune et al.

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