Abstract
The equilibrium relationships in the systems Au-CN-H2O and Ag-CN-H2O have been investigated with the aid of the DIAGRAM computer program and thermodynamic data taken from the literature. On the basis of stability diagrams such as Eh-pH, log[Me]-pH, and log[CN]-pH, a discussion is pre-sented of the behavior of gold and silver in cyanide solutions. It is shown that gold and silver have similar behaviors in cyanide media; both metals exhibit wide solubility domains with di-cyanide complexes predominating. Solid AgCN is stable only in solutions of low pH and high silver/cyanide ratio; the species Ag(CN)3 2- and Ag(CN) 4 3 form only in concentrated cyanide solutions.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 455-463 |
| Number of pages | 9 |
| Journal | Metallurgical Transactions B |
| Volume | 16 |
| Issue number | 3 |
| DOIs | |
| State | Published - Sep 1 1985 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
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Heterogeneous equilibria in the Au-CN-H2O and Ag-CN-H2O systems. / Xue, T.; Osseo-Asare, K.
In: Metallurgical Transactions B, Vol. 16, No. 3, 01.09.1985, p. 455-463.Research output: Contribution to journal › Article
TY - JOUR
T1 - Heterogeneous equilibria in the Au-CN-H2O and Ag-CN-H2O systems
AU - Xue, T.
AU - Osseo-Asare, K.
PY - 1985/9/1
Y1 - 1985/9/1
N2 - The equilibrium relationships in the systems Au-CN-H2O and Ag-CN-H2O have been investigated with the aid of the DIAGRAM computer program and thermodynamic data taken from the literature. On the basis of stability diagrams such as Eh-pH, log[Me]-pH, and log[CN]-pH, a discussion is pre-sented of the behavior of gold and silver in cyanide solutions. It is shown that gold and silver have similar behaviors in cyanide media; both metals exhibit wide solubility domains with di-cyanide complexes predominating. Solid AgCN is stable only in solutions of low pH and high silver/cyanide ratio; the species Ag(CN)3 2- and Ag(CN) 4 3 form only in concentrated cyanide solutions.
AB - The equilibrium relationships in the systems Au-CN-H2O and Ag-CN-H2O have been investigated with the aid of the DIAGRAM computer program and thermodynamic data taken from the literature. On the basis of stability diagrams such as Eh-pH, log[Me]-pH, and log[CN]-pH, a discussion is pre-sented of the behavior of gold and silver in cyanide solutions. It is shown that gold and silver have similar behaviors in cyanide media; both metals exhibit wide solubility domains with di-cyanide complexes predominating. Solid AgCN is stable only in solutions of low pH and high silver/cyanide ratio; the species Ag(CN)3 2- and Ag(CN) 4 3 form only in concentrated cyanide solutions.
UR - http://www.scopus.com/inward/record.url?scp=0022130626&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0022130626&partnerID=8YFLogxK
U2 - 10.1007/BF02654844
DO - 10.1007/BF02654844
M3 - Article
AN - SCOPUS:0022130626
VL - 16
SP - 455
EP - 463
JO - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
JF - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
SN - 1073-5615
IS - 3
ER -