The use of zinc for gold cementation from ammoniacal-thiosulphate solutions

被引:46
作者
Navarro, P
Alvarez, R
Vargas, C
Alguacil, FJ
机构
[1] CSIC, Ctr Nacl Invest Met, Madrid 28040, Spain
[2] Univ Santiago Chile, Dept Ingn Met, Santiago 10233, Chile
关键词
cementation; gold ores; hydrometallurgy;
D O I
10.1016/j.mineng.2004.02.001
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The use of zinc as a cementation agent for gold from ammoniacal-thiosulphate solutions has been studied. The experimental variables investigated were: (i) pH (9-10.5), (ii) thiosulphate concentration (0.05-0.4 M), (iii) temperature (5-50 degreesC), (iv) presence of zinc in the system (both as cementation agent and in the gold solution), (v) presence of Cu(II) (0-0.05 M) in the solution, and (vi) [NH3]/[S2O32-] molar ratio in the aqueous solution. The cementation process was considered to be under diffusion control. A generalmechanism for gold cementation is proposed. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码:825 / 831
页数:7
相关论文
共 17 条
[1]   Thiosulfate leaching of gold - A review [J].
Aylmore, MG ;
Muir, DM .
MINERALS ENGINEERING, 2001, 14 (02) :135-174
[2]   An electrochemical study of gold leaching in thiosulphate solutions containing copper and ammonia [J].
Breuer, PL ;
Jeffrey, MI .
HYDROMETALLURGY, 2002, 65 (2-3) :145-157
[3]   Thiosulfate leaching kinetics of gold in the presence of copper and ammonia [J].
Breuer, PL ;
Jeffrey, MI .
MINERALS ENGINEERING, 2000, 13 (10-11) :1071-1081
[4]   The role of heavy metal ions in gold dissolution in the ammoniacal thiosulphate system [J].
Feng, D ;
van Deventer, JSJ .
HYDROMETALLURGY, 2002, 64 (03) :231-246
[5]   Thiosulfate leaching of gold from a mechanically activated CuPbZn concentrate [J].
Ficeriová, J ;
Baláz, P ;
Boldizárova, E ;
Jelen, S .
HYDROMETALLURGY, 2002, 67 (1-3) :37-43
[6]   Leaching and recovery of gold using ammoniacal thiosulfate leach liquors (a review) [J].
Grosse, AC ;
Dicinoski, GW ;
Shaw, MJ ;
Haddad, PR .
HYDROMETALLURGY, 2003, 69 (1-3) :1-21
[7]   A study of the factors affecting copper cementation of gold from ammoniacal thiosulphate solution [J].
Guerra, E ;
Dreisinger, DB .
HYDROMETALLURGY, 1999, 51 (02) :155-172
[8]   Kinetics of gold cementation on copper in ammoniacal thiosulfate solutions [J].
Hiskey, JB ;
Lee, JH .
HYDROMETALLURGY, 2003, 69 (1-3) :45-56
[9]   REVIEW OF GOLD EXTRACTION FROM ORES [J].
LABROOY, SR ;
LINGE, HG ;
WALKER, GS .
MINERALS ENGINEERING, 1994, 7 (10) :1213-1241
[10]   COPPER-CATALYZED THIOSULFATE LEACHING OF LOW-GRADE GOLD ORES [J].
LANGHANS, JW ;
LEI, KPV ;
CARNAHAN, TG .
HYDROMETALLURGY, 1992, 29 (1-3) :191-203