Elution process for gold-iodine complex from ion-exchange resins
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United States of America Patent
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Sep 24, 1991
Grant Date -
N/A
app pub date -
May 1, 1990
filing date -
May 12, 1989
priority date (Note) -
Expired
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Abstract
A process for eluting gold-iodine complex from an ion-exchange resin, characterized by adding sulfuric acid and sodium nitrite to the gold-iodine complex adsorbed on the resin, and adding sodium sulfite as an eluant. The process is particularly useful for eluting gold-iodine complex adsorbed on strongly basic anion-exchange resin, such as washings resulting from the washing of leach residue which has been passed through the resin.
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