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| Experiment on Hot Pressing Oxidation and Cyaniding of Multiple Refractory Gold Ore Coated with Carboniferous High Arsenic Sulfide |
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Received:April 17, 2024
Revised:May 12, 2024
Accepted:May 13, 2024
Published Online:September 11, 2024
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| DOI：doi：10.3969/j.issn.1007-7545.2024.10.014 |
| KeyWord:carbonaceous; refractory gold ore; hot pressurized oxidation; roasting; cyanidation |
| Author | Institution |
| LIN Haibin |
低品位难处理黄金资源综合利用国家重点实验室, 厦门紫金矿冶技术有限公司 |
| GUO Jinyi |
低品位难处理黄金资源综合利用国家重点实验室, 厦门紫金矿冶技术有限公司 |
| XIE Hongzhen |
低品位难处理黄金资源综合利用国家重点实验室, 厦门紫金矿冶技术有限公司 |
| WANG Qiankun |
低品位难处理黄金资源综合利用国家重点实验室, 厦门紫金矿冶技术有限公司,紫金矿业集团股份有限公司 |
| LI Youhui |
低品位难处理黄金资源综合利用国家重点实验室, 厦门紫金矿冶技术有限公司 |
| QIU Yaoxing |
低品位难处理黄金资源综合利用国家重点实验室, 厦门紫金矿冶技术有限公司 |
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| Abstract: |
| A multi-refractory gold deposit coated with carbon high arsenic sulfide was studied by hot pressing oxidation and cyanidation. The results indicate that the gold leaching recovery of the whole sulfide flotation concentrate is only 76.2% by conventional hot pressurized oxidation-cyanidation process, and the measurements such as decarbonization of hot pressurized oxidation solid product, raw ores pre-carbonization and segmentation flotation of sulfide and arsenic, are all difficult to improve the gold recovery. The effect of organic carbon can be completely eliminated by medium temperature roasting and then cyaniding, the gold leaching rate reaches 94.7%, and the harmful component arsenic hardly enters the gas phase during roasting. The toxic leaching results of the mixture of roasting-cyanidation slag and neutralization slag of hot press oxidation eutralization slag can meet the general requirements of solid waste. |
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