Arsenic removal from lead concentrate by ozone treatment and reverse flotation

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United States of America Patent

PATENT NO 10822673
SERIAL NO

16716630

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Abstract

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Method for removing arsenic mineral from a lead concentrate by reverse flotation with an ozone pre-treatment. The method comprises the steps of: receiving a slurry of the lead concentrate that has previously undergone flotation processes, bubbling ozone into the slurry of the lead concentrate to remove reagents used in previous flotation processes, adding a sulfide salt to the slurry to depress lead mineral, adding an alkali to increase the pH of the slurry, adding a collector and then a frother to the slurry for a reverse flotation processing and floating the arsenic mineral out of the lead mineral to obtain a now-purified lead concentrate.

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Patent Owner(s)

Patent OwnerAddress
AMERICAN AIR LIQUIDE INC46409 LANDING PARKWAY FREMONT CA 94538

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Zuttah, Sylvester Bear, US 4 0

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