The leaching of gold in cyanide solutions in the presence of impurities - I. The effect of lead

被引：41
作者：
Jeffrey, MI [1 ]
Ritchie, IM [1 ]
机构：
[1] Murdoch Univ, AJ Parker CRC Hydromet, Murdoch, WA 6150, Australia
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2000年 / 147卷 / 09期
关键词：
D O I：
10.1149/1.1393892
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
In the present study, a rotating electrochemical quartz crystal microbalance was used to investigate the effect of lead on the leaching of gold in aerated alkaline cyanide solutions. It was found that the addition of trace amounts of lead substantially increased the leaching rate, and it is believed that the role of lead was to modify the surface of the gold by cementation. Complementary electrochemical studies showed that lead acts in two ways: it reduces the overpotential required for the oxidation of gold and it enhances the reduction of oxygen. Thus, it is likely that bimetallic corrosion was occurring during gold leaching in the presence of lead. The effect of rotation rate, and cyanide and oxygen concentrations were investigated, and it was found that the action of lead was critically dependent on leaching conditions. (C) 2000 The Electrochemical Society. S0013-4651(00)03-050-5. All rights reserved.
引用
收藏
页码：3257 / 3262
页数：6
相关论文
共 50 条
[41]   Anodic dissolution of gold in cyanide solutions: Effect of temperature [J].
Bek, RY ;
Kosolapov, GV ;
Shuraeva, LI .
RUSSIAN JOURNAL OF ELECTROCHEMISTRY, 2001, 37 (03) :256-260
[42]   Anodic Dissolution of Gold in Cyanide Solutions: Effect of Temperature [J].
R. Yu. Bek ;
G. V. Kosolapov ;
L. I. Shuraeva .
Russian Journal of Electrochemistry, 2001, 37 :256-260
[43]   Enhanced cyanidation. Cyanide leaching of gold and silver in solutions containing hydrogen peroxide [J].
Bahr, A. ;
Priesemann, Th. .
Mines & carrieres. Les techniques, 1992, :117-121
[44]   A kinetic and electrochemical study of the ammonia cyanide process for leaching gold in solutions containing copper [J].
Jeffrey, MI ;
Linda, L ;
Breuer, PL ;
Chu, CK .
MINERALS ENGINEERING, 2002, 15 (12) :1173-1180
[45]   RELATIONS BETWEEN THE SIZE DISTRIBUTION OF A GOLD PARTICLE SYSTEM AND THE LEACHING CURVE IN CYANIDE SOLUTIONS [J].
GUZMAN, L ;
YAPU, W ;
CHIMENOS, JM ;
VILADEVALL, M ;
ESPIELL, F .
HYDROMETALLURGY, 1994, 36 (02) :187-199
[46]   Effect of lead(II) compounds on the rate of cyanide dissolution of gold [J].
Solozhenkin, P. M. ;
Mil'man, B. M. ;
Vorob'ev-Desyatovskii, N. V. .
RUSSIAN JOURNAL OF GENERAL CHEMISTRY, 2007, 77 (01) :1-9
[47]   Effect of lead(II) compounds on the rate of cyanide dissolution of gold [J].
P. M. Solozhenkin ;
B. M. Mil’man ;
N. V. Vorob’ev-Desyatovskii .
Russian Journal of General Chemistry, 2007, 77 :1-9
[48]   The use of equilibrium diagrams to better understand the influence of lead additions on gold leaching in aqueous cyanide [J].
Sandenbergh, R. F. ;
Mahlangu, T. .
WORLD GOLD 2007: BY AND CO-PRODUCTS AND THE ENVIRONMENT, 2007, (09) :265-268
[49]   Effect of thallium(I) ions on anodic dissolution of gold in alkali—cyanide solutions at negative potentials [J].
R. Yu. Bek ;
N. A. Rogozhnikov ;
L. I. Shuraeva .
Russian Journal of Electrochemistry, 2000, 36 :726-730
[50]   Inhibition of lead solubilization during the leaching of gold and silver in ammoniacal thiosulfate solutions (effect of phosphate addition) [J].
Alonso-Gomez, A. R. ;
Lapidus, G. T. .
HYDROMETALLURGY, 2009, 99 (1-2) :89-96
12345