Next Article in Journal
Incorporation of Geometallurgical Input into Gold Mining System Simulation to Control Cyanide Consumption
Previous Article in Journal
Recovery of Valuable Metals from Nickel Smelting Slag Based on Reduction and Sulfurization Modification
 
 
Article

Flotation of Carbonaceous Matter from a Double Refractory Gold Ore: The Effect of MIBC on Flotation Performance and Kinetics

The Robert M. Buchan Department of Mining, Queen’s University, Kingston, ON K7L3N6, Canada
*
Authors to whom correspondence should be addressed.
Academic Editor: Dave Deglon
Minerals 2021, 11(9), 1021; https://doi.org/10.3390/min11091021
Received: 26 August 2021 / Revised: 14 September 2021 / Accepted: 16 September 2021 / Published: 19 September 2021
(This article belongs to the Section Mineral Processing and Extractive Metallurgy)
The use of alkaline pressure oxidation to pretreat refractory gold ore often results in insufficient gold recovery (<60%) in downstream thiosulfate leaching. To improve gold recovery, flotation was considered for the separation of carbonaceous matter (C-matter). In this study, the effect of MIBC on C-matter flotation was investigated to understand the role of the frother in bubble and froth formation and on flotation kinetics. MIBC dosages between 30 and 150 g/t were used in combination with 500 g/t of kerosene as a collector. The results showed that the recovery and selectivity of C-matter were improved with increasing MIBC dosages. Improved selectivity at higher MIBC dosages was attributed to faster C-matter recovery as bubble size decreased to the critical coalescence concentration (CCC) and to changes to the foam structure. Analysis of flotation kinetics showed that the flotation rate increased as the MIBC dosage increased due to the decreasing bubble size and the reduced induction time caused by the interaction between the collector and the frother. The results of this study explain the role of MIBC in C-matter flotation and can be used as a design basis for scavenger-cleaner flotation testing. Overall, the results show the potential for flotation as a means to improve gold recovery in thiosulfate leaching through the removal of C-matter. View Full-Text
Keywords: carbonaceous matter flotation; frother; kinetics study; MIBC effect; refractory gold ore carbonaceous matter flotation; frother; kinetics study; MIBC effect; refractory gold ore
Show Figures

Figure 1

MDPI and ACS Style

Lee, S.; Gibson, C.E.; Ghahreman, A. Flotation of Carbonaceous Matter from a Double Refractory Gold Ore: The Effect of MIBC on Flotation Performance and Kinetics. Minerals 2021, 11, 1021. https://doi.org/10.3390/min11091021

AMA Style

Lee S, Gibson CE, Ghahreman A. Flotation of Carbonaceous Matter from a Double Refractory Gold Ore: The Effect of MIBC on Flotation Performance and Kinetics. Minerals. 2021; 11(9):1021. https://doi.org/10.3390/min11091021

Chicago/Turabian Style

Lee, Sugyeong, Charlotte E. Gibson, and Ahmad Ghahreman. 2021. "Flotation of Carbonaceous Matter from a Double Refractory Gold Ore: The Effect of MIBC on Flotation Performance and Kinetics" Minerals 11, no. 9: 1021. https://doi.org/10.3390/min11091021

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop