1380 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
triple refractory gold ores are mainly composed of silicates
and/or carbonates with moderate amounts of clay and
mica, along with minor amounts of sulphides and organic
carbonaceous matter.
Variable proportions of visible gold and “invisible gold”
(sub-microscopic gold) were noted in different mineral
phases for various ore types and process stream samples.
Invisible gold commonly occurs as solid solution or as col-
loidal-sized particles in different sulphides and other phases
for different refractory ores. The dominance of invisible
gold and presence of highly gold-robbing along with finely
disseminated carbonaceous matters adversely affects gold
recovery in flotation and leach circuits for most of these
refractory ores.
This paper discusses applications of an advanced
integrated gold deportment technique developed for dif-
ferent types of gold and copper-gold ores, namely, com-
plex copper-gold, double and triple refractory gold ores
(Chattopadhyay and Gorain, 2012, 2014 Chattopadhyay
et al., 2016, 2018 Gorain and Lakshmanan, 2019).
Figure 1. Flow-chart Diagram of Novel Gold Deportment technique (Chattopadhyay &Gorain, 2014)
triple refractory gold ores are mainly composed of silicates
and/or carbonates with moderate amounts of clay and
mica, along with minor amounts of sulphides and organic
carbonaceous matter.
Variable proportions of visible gold and “invisible gold”
(sub-microscopic gold) were noted in different mineral
phases for various ore types and process stream samples.
Invisible gold commonly occurs as solid solution or as col-
loidal-sized particles in different sulphides and other phases
for different refractory ores. The dominance of invisible
gold and presence of highly gold-robbing along with finely
disseminated carbonaceous matters adversely affects gold
recovery in flotation and leach circuits for most of these
refractory ores.
This paper discusses applications of an advanced
integrated gold deportment technique developed for dif-
ferent types of gold and copper-gold ores, namely, com-
plex copper-gold, double and triple refractory gold ores
(Chattopadhyay and Gorain, 2012, 2014 Chattopadhyay
et al., 2016, 2018 Gorain and Lakshmanan, 2019).
Figure 1. Flow-chart Diagram of Novel Gold Deportment technique (Chattopadhyay &Gorain, 2014)