Zinc recovery from steel plant dusts and other zinciferous materials

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United States of America Patent

PATENT NO 4572771
SERIAL NO

06696979

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
BIG RIVER ZINC CORPORATIONROUTE 3 & MONSANTO AVENUE SAUGET IL 62201

International Classification(s)

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  • 1985 Application Filing Year
  • C25B Class
  • 169 Applications Filed
  • 1 Patents Issued To-Date
  • 0.60 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances198519861987198819891990199119921993199419950255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Duyvesteyn, Willem P C Benthuisen, NL 62 1088
Jha, Mahesh C Arvada, CO 11 164

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  • 12 Citation Count
  • C25B Class
  • 0 % this patent is cited more than
  • 39 Age
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