Title
Cyanide regeneration and copper recovery from cyanide solutions
Date Issued
01 December 1997
Access level
metadata only access
Resource Type
conference paper
Author(s)
Abstract
A method has been developed to recover cyanide and copper from solutions containing copper complexes and thiocyanate. Copper is precipitated as copper thiocyanate or as copper cyanide depending on pH and the concentrations of thiocyanate and cyanide in the effluent. The copper precipitate assays over 50% copper and presents good dewatering characteristics. After settling it can be separated from the effluent by filtration. The solution containing the bulk of the cyanide is then oxidized with ozone to transform the remaining thiocyanate into cyanide. This results in a regenerated solution rich in free cyanide that can be recycled to the cyanidation process. Careful control of the pH of the solution is required.
Start page
151
End page
160
Language
English
OCDE Knowledge area
Mineralogía
Scopus EID
2-s2.0-0031355881
Source
TMS Annual Meeting
Conference
TMS Annual Meeting
Sources of information: Directorio de Producción Científica Scopus