Abstract
The behaviour of free gold particles in a simulated flash flotation environment
Highlights
The behaviour of free gold in flash flotation is currently poorly understood (Dunne 2005), especially when in competition with a gravity recovery unit in a closed-loop milling circuit, an overlap has been identified in which both units can recover particles between 212 μm and 38 μm
14% of coarse gold from the Gravity-recoverable gold (GRG) concentrate was recovered without PAX addition, as shown in Figure 5, suggesting that 86% of the coarse GRG concentrate gold reported to tails in this test
The floatability of coarse, +212 μm, gold is of interest in this study because this is the size fraction generally considered to be too large for flotation, with preference given to gravity recovery in this size fraction
Summary
The behaviour of free gold in flash flotation is currently poorly understood (Dunne 2005), especially when in competition with a gravity recovery unit in a closed-loop milling circuit, an overlap has been identified in which both units can recover particles between 212 μm and 38 μm. Several plants use batch centrifugal concentrators (BCCs) and flash flotation unit operations in a closed-loop milling circuit as an option for processing complex ores containing free gold as well as gold locked in a sulphide matrix. Because knowledge of the behaviour of free gold recovery in a closed-loop milling circuit with parallel flash flotation and gravity recovery units is limited, an improved understanding of the behaviour of gold in this situation will provide greater confidence in the application of such processes to the processing of complex gold ores.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Southern African Institute of Mining and Metallurgy
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
