Elution process for gold-iodine complex from ion-exchange resins

Details Elution process for gold-iodine complex from ion-exchange resins Elution process for gold-iodine complex from ion-exchange resins

1990-05-01

1991-09-24

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75736, 75737, C22B 1104

Patent

active

050511289

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.

REFERENCES:
patent: 2304823 (1942-12-01), Harrison
patent: 3957505 (1976-05-01), Homick
patent: 4557759 (1985-12-01), McGrew
patent: 4723998 (1988-02-01), O'Neil
patent: 4734171 (1988-03-01), Murphy

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