Characterization of carbonaceous matter in high-sulfur Carlin-type gold concentrate and its influence on gold recovery in bio-pretreatment product

QIU Xiao-bin; WEN Jian-kang; HUANG Song-tao; YANG Hong-ying; WU Biao; LIU Mei-lin

doi:10.13374/j.issn2095-9389.2017.05.005

Volume 39 Issue 5

May 2017

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Article Navigation > Chinese Journal of Engineering > 2017 > 39(5): 676-682

QIU Xiao-bin, WEN Jian-kang, HUANG Song-tao, YANG Hong-ying, WU Biao, LIU Mei-lin. Characterization of carbonaceous matter in high-sulfur Carlin-type gold concentrate and its influence on gold recovery in bio-pretreatment product[J]. Chinese Journal of Engineering, 2017, 39(5): 676-682. doi: 10.13374/j.issn2095-9389.2017.05.005

Citation:

QIU Xiao-bin, WEN Jian-kang, HUANG Song-tao, YANG Hong-ying, WU Biao, LIU Mei-lin. Characterization of carbonaceous matter in high-sulfur Carlin-type gold concentrate and its influence on gold recovery in bio-pretreatment product[J]. Chinese Journal of Engineering, 2017, 39(5): 676-682. doi: 10.13374/j.issn2095-9389.2017.05.005

Citation:

QIU Xiao-bin, WEN Jian-kang, HUANG Song-tao, YANG Hong-ying, WU Biao, LIU Mei-lin. Characterization of carbonaceous matter in high-sulfur Carlin-type gold concentrate and its influence on gold recovery in bio-pretreatment product[J]. Chinese Journal of Engineering, 2017, 39(5): 676-682. doi: 10.13374/j.issn2095-9389.2017.05.005

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Characterization of carbonaceous matter in high-sulfur Carlin-type gold concentrate and its influence on gold recovery in bio-pretreatment product

doi: 10.13374/j.issn2095-9389.2017.05.005

1) National Engineering Laboratory of Biohydrometallurgy, General Research Institute for Nonferrous Metals, Beijing 100088, China
2) School of Metallurgy, Northeastern University, Shenyang 110819, China

Received Date: 2016-12-22

Abstract

Abstract

To study the effect of carbonaceous matter on gold recovery in bio-pretreatment followed by a cyanide leaching process, the carbonaceous matter was characterized in high-sulfur Carlin-type gold flotation concentrate by gas chromatography-mass spectrometry (GC-MS), Raman spectroscopy, Preg-robbing index tests, and gold loading tests. The results indicate the presence of kerogen in the concentrate, which interferes with the gold extraction due to its strong gold adsorption. Both the Raman and PRI tests show a strong preg-robbing capacity of the carbonaceous matter in the samples. In addition, activated carbon in the cyanidation process of the bio-oxidized product could decrease by approximately 10.14% the adsorption of exposed gold by the carbonaceous matter. A final gold recovery rate is 80.17%.
- preg-robbing carbonaceous matter,
- organic carbonaceous matter,
- Raman ratio,
- preg-robbing index,
- bio-pretreatment

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References(13)

References

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