Direct extraction of Ag+ and Hg2+ from cyanide complexes and mode of binding by the layered K2MgSn2S6 (KMS-2)

Zohreh Hassanzadeh Fard, Christos D. Malliakas, Joshua L. Mertz, Mercouri G Kanatzidis

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

One of the long-term issues associated with this method is the efficient extraction of the metals from the formed cyanide complexes. Different methods such as zinc-dust cementation, carbon adsorption, solvent extraction, and ion exchange have been used for metal recovery from alkaline cyanide solutions. Some difficulties associated with these methods are high zinc consumption and reaction sensitivity to impurities of the leach liquor in the zinc-dust cementation process. Also a problem is the slow reaction kinetics and carbon fouling due to salt precipitation in the carbon adsorption technique, lack of a selective extractant, and large amount of solvent consumption in the solvent extraction method. Among these methods, ion-exchange technologies have been receiving much attention because they promise to eliminate some of the disadvantages of the other methods. Ore leaching processes using cyanidation technology have been extensively used in industry for over a century.

Original languageEnglish
Pages (from-to)1925-1928
Number of pages4
JournalChemistry of Materials
Volume27
Issue number6
DOIs
Publication statusPublished - 2015

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Cyanides
Zinc
Carbon
Solvent extraction
Dust
Ion exchange
Metal recovery
Adsorption
Fouling
Reaction kinetics
Ores
Leaching
Salts
Metals
Impurities
Industry

ASJC Scopus subject areas

  • Materials Chemistry
  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Direct extraction of Ag+ and Hg2+ from cyanide complexes and mode of binding by the layered K2MgSn2S6 (KMS-2). / Hassanzadeh Fard, Zohreh; Malliakas, Christos D.; Mertz, Joshua L.; Kanatzidis, Mercouri G.

In: Chemistry of Materials, Vol. 27, No. 6, 2015, p. 1925-1928.

Research output: Contribution to journalArticle

Hassanzadeh Fard, Zohreh ; Malliakas, Christos D. ; Mertz, Joshua L. ; Kanatzidis, Mercouri G. / Direct extraction of Ag+ and Hg2+ from cyanide complexes and mode of binding by the layered K2MgSn2S6 (KMS-2). In: Chemistry of Materials. 2015 ; Vol. 27, No. 6. pp. 1925-1928.
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