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| Research Status on Carbonaceous Matter Characteristic and Decarbonization of Carlin-type Gold Ore |
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Received:February 19, 2019
Revised:February 28, 2019
Accepted:February 28, 2019
Published Online:May 17, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.06.008 |
| KeyWord:Carlin-type gold; carbonaceous matter; preg-robbing; decarbonization method |
| Author | Institution |
| Niu Huiqun |
东北大学 |
| Tong Linlin |
东北大学 |
| Zhong Shuiping |
紫金矿业集团股份有限公司 |
| Li Jing |
紫金矿业集团股份有限公司 |
| Yang Hongying |
东北大学 |
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| Abstract: |
| Carlin-type gold ore is a typical carbonaceous and arsenic-containing gold deposit. Carbonaceous matter in gold ore is mainly composed of inorganic carbon and organic carbon. Except for carbonate minerals, inorganic carbon is mostly elemental carbon, while organic carbon mainly contains humic substance and hydrocarbon. The previous research results indicate that carbonaceous matters generate serious preg-robbing effect on gold extraction by cyanidation, resulting in drop of gold leaching rate. Composition characteristic of carbonaceous matter in Carlin-type gold deposits and mechanism of pre-robbing are described. Decarbonization methods of carbonaceous matter in gold ore are summarized. Principles, characteristics, advantages and disadvantages of existing pretreatment methods are analyzed. Prospect for future research of Carlin-type gold deposit is put forward. |
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