|
| Effect of Copper Grade in Bioleaching Residues of Low Grade Gold-copper Ores on Gold Cyaniding Extraction |
|
Received:July 14, 2015
Revised:July 16, 2015
Accepted:July 17, 2015
Published Online:December 24, 2015
|
| View Full Text View/Add Comment Download reader |
| DOI：10.3969/j.issn.1007-7545.2016.01.011 |
| KeyWord:low grade gold-copper ore; copper bioleaching; gold cyaniding extraction |
| Author | Institution |
| Xiaokang Lai |
紫金矿业集团股份有限公司低品位难处理黄金资源综合利用国家重点实验室 |
| Zengling Wu |
低品位难处理黄金资源综合利用国家重点实验室 |
| Feng Zhu |
低品位难处理黄金资源综合利用国家重点实验室 |
| Quanxiu Jiang |
低品位难处理黄金资源综合利用国家重点实验室 |
|
| Hits: 1996 |
| Download times: 2017 |
| Abstract: |
| Shake flask experiments of low grade gold-copper ores from Zijinshan by bio-heap leaching, media conversion, gold cyaniding extraction were carried out. Copper extraction with different bioleaching duration and influence of copper grade in residue on gold cyaniding were investigated. The results show that 73% of copper is extracted after 12 days bioleaching and copper grade in residue declines to 0.096%. Copper grade exerts significant impact on gold cyanidation. Dosage of sodium cyanide, copper extraction and copper concentration in cyaniding rise with increase of copper grade in bioleaching residues. Copper grade in bioleaching residue should be reduced to 0.1% below in order to reduce impact of copper on cyanide and ensure recovery of copper and gold. |
| Close |