Method for the treatment of iron-containing sludge

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United States of America Patent

PATENT NO 11519053
APP PUB NO 20190177815A1
SERIAL NO

15572077

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Abstract

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The present invention provides a method for the treatment of sludge containing iron and between 4.5% to 12% by weight of zinc. This method includes a leaching step wherein leaching agents include hydrochloric acid and chlorate, and wherein the pH of the leachate directly resulting from this leaching step is set at a value below 1.5. A recycling method and treatment installation are also provided.

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Patent Owner(s)

  • ARCELORMITTAL COMMERCIAL RPS S.A.R.L.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Giordana, Severine Metz, FR 1 0

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