METHOD OF EXTRACTION OF GOLD AND SILVER FROM LOW- CONCENTRATION SOLUTIONS AND DEVICE FOR REALIZATION OF THIS METHOD Russian patent published in 2004 - IPC

Abstract RU 2225454 C1

FIELD: hydrometallurgy of noble metals; extraction of gold and silver form low-concentration solutions (discharge pulp of tailing dumps and sea water). SUBSTANCE: proposed method includes extraction of gold and silver in presence of ions of other metals by adsorption of these metals in anion form; magnetic powder-like adsorbent placed in solution containing ions of gold and silver is kept in this solution for 24-28 h, after which it is removed by mans of pump, dried and molten with fluxing additives, thus obtaining crude metal. Device proposed for realization of this method includes perforated magnetic disk coated with powder-like adsorbent and positioned between two foam plastic rings. EFFECT: enhanced efficiency and selectivity of extraction of gold and silver. 3 cl, 1 dwg, 3 ex

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RU 2 225 454 C1

Authors

Gerasimova V.N.

Dates

2004-03-10Published

2002-09-19Filed