SELECTIVE GOLD DISSOLUTION FROM A ROASTED AURIFEROUS PYRITE ARSENOPYRITE CONCENTRATE

Authors
ANGELIDIS TN KYDROS KA
Citation
Tn. Angelidis et Ka. Kydros, SELECTIVE GOLD DISSOLUTION FROM A ROASTED AURIFEROUS PYRITE ARSENOPYRITE CONCENTRATE, Hydrometallurgy, 37(1), 1995, pp. 75-88
Citations number
14
Categorie Soggetti
Metallurgy & Metallurigical Engineering
Journal title
Hydrometallurgy → ACNP
ISSN journal
0304386X
Volume
37
Issue
1
Year of publication
1995
Pages
75 - 88
Database
ISI
SICI code
0304-386X(1995)37:1<75:SGDFAR>2.0.ZU;2-9
Abstract
Gold dissolution from a roasted auriferous pyrite-arsenopyrite concent rate was studied using an iodine-iodide solution as lixiviant. The inf luence of iodine-iodide concentrations and pH on dissolution yield and side reactions with other ore constituents was examined. Available go ld dissolution was fast and almost selective. Silver, lead and copper were found to cause excess iodide consumption, through side reactions, and may be considered as 'iodidecides'. Thermodynamic considerations gave a satisfactory explanation of the experimental findings.