Assessing centrifugal gravity concentration to scavenge gold from flotation tails

Date

2014-10-01

Author

Sakuhuni, G
Altun, Naci Emre
Klein, B

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The opportunity of decreasing gold losses by using a centrifugal gravity concentrator as a scavenger on flotation tailings was evaluated. The tailings of the Cu-flotation circuit of the Nyrstar's Myra Falls Mine at Vancouver Island, Canada, were used for the tests. A Knelson CVD6 was retrofitted on Cu-rougher tailing and Cu-cleaner tailing streams during normal operation to recover misplaced liberated gold entities as well as gold bearing middlings. The analysis and comparison of gold, silver, copper, lead and iron grades showed that gold existed mainly in the form of electrum in the Cu-rougher tailings. In addition to electrum, associations with lead and iron were detected in the Cu-cleaner tailings. For both applications the CVD was capable of scavenging gold from the flotation tailings to a higher grade than the feed. CVD application was promising on both streams with the Cu-cleaner tailings being more susceptible to Au recovery by CVD. Overall CVD implementation proved to be useful in reducing the loss of Au values, as well as providing the flexibility to select between grade targeted or recovery targeted options for the additional Au recovery.

URI

https://hdl.handle.net/11511/83231

Conference Name

14th International Mineral Processing Symposium (15 - 17 Ekim 2014)

Collections

Department of Mining Engineering, Conference / Seminar

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Citation Formats

G. Sakuhuni, N. E. Altun, and B. Klein, “Assessing centrifugal gravity concentration to scavenge gold from flotation tails,” presented at the 14th International Mineral Processing Symposium (15 - 17 Ekim 2014), Kuşadası, Turkey, 2014, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/83231.