Application of the shrinking core model to the kinetics of extraction of gold(I), silver(I) and nickel(II) cyanide complexes by novel anion exchange resins

Dicinoski, GW, Gahan, LR, Lawson, PJ and Rideout, JA (2000) Application of the shrinking core model to the kinetics of extraction of gold(I), silver(I) and nickel(II) cyanide complexes by novel anion exchange resins. Hydrometallurgy, 56 3: 323-336.


Author Dicinoski, GW
Gahan, LR
Lawson, PJ
Rideout, JA
Title Application of the shrinking core model to the kinetics of extraction of gold(I), silver(I) and nickel(II) cyanide complexes by novel anion exchange resins
Journal name Hydrometallurgy   Check publisher's open access policy
Publication date 2000
Sub-type Article
DOI 10.1016/S0304-386X(00)00082-7
Volume number 56
Issue number 3
ISSN 0304-386X
Start page 323
End page 336
Total pages 14
Place of publication Amsterdam
Publisher Elsevier Science
Collection year 2000
Language eng
Subject C1
259903 Industrial Chemistry
780103 Chemical sciences
Abstract This paper describes an investigation of the kinetics of loading of gold(I), silver(I), and nickel(II) cyanide complexes onto two novel anion exchange resins with high selectivity for the linear dicyanoaurate(I) and dicyanoargentate(I) complexes. The kinetic data fit well to a shrinking core theoretical model, and indicate that in all three complexes, the loading is controlled by the rate of diffusion of the ions penetrating the reacted layer, Diffusion coefficients were determined and those of Au(I) and Ag(I) cyano complexes are similar to one another but much higher (30 to 60 times) those of the Ni(II) cyano complex on these two resins. (C) 2000 Elsevier Science B.V. All rights reserved.
Keyword Metallurgy & Metallurgical Engineering
Aurocyanide
Argentocyanide
Gold And Silver Selective Resins
Resin-in-pulp
Shrinking Core Model
Kinetics Of Loading Of Precious Metals Onto Anion Exchange Resins
Strong-base
Elution
Beads
Q-Index Code C1

Document type: Journal Article
Sub-type: Article
Collection: School of Chemistry and Molecular Biosciences
 
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Created: Tue, 10 Jun 2008, 12:00:28 EST