Preg-robbing of gold in chloride-bromide solution
Loading...
Access rights
openAccess
publishedVersion
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Authors
Date
2016
Major/Subject
Mcode
Degree programme
Language
en
Pages
8
Series
Physicochemical Problems of Mineral Processing, Volume 52, issue 1, pp. 244-251
Abstract
One of the major issue in gold chloride leaching is a tendency of gold to either precipitate or adsorb on a carbonaceous matter in an ore, i.e. preg-robbing. This paper discusses issues related to a preg-robbing phenomenon in gold hydrometallurgy, specifically in gold chloride-bromide leaching. This phenomenon has been observed in the 1800s to decrease gold recovery during gold chlorination as well as the state-of-art of gold cyanidation processes. The experiments were conducted in order to study the preg-robbing phenomenon in chloride-bromide media. The tendency of preg-robbing was demonstrated by adding carbon in a non-preg-robbing ore. It was shown that the preg-robbing tendency in the chloride-bromide media was very strong. Addition of 0.01% w/w of carbon powder into the non-preg-robbing ore decreased gold recovery from 92 to 70% and addition 5% w/w of carbon decreased gold recovery to almost zero.Description
Keywords
Carbon, Gold, Hydrometallurgy, Leaching, Pre-robbing
Other note
Citation
Ahtiainen, R & Lundström, M 2016, ' Preg-robbing of gold in chloride-bromide solution ', Physicochemical Problems of Mineral Processing, vol. 52, no. 1, pp. 244-251 . https://doi.org/10.5277/ppmp160121