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| Expansion Test on Heap Leaching of Low-Grade Copper-Nickel-Cobalt Oxide Ores |
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Received:August 12, 2023
Revised:August 18, 2023
Accepted:August 21, 2023
Published Online:October 27, 2023
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| DOI：doi：10.3969/j.issn.1007-7545.2023.12.001 |
| KeyWord:copper-nickel-cobalt ores; heap leaching; sulfuric acid; bacterial; expansion test |
| Author | Institution |
| GAN Guoxian |
北京科技大学冶金与生态工程学院 |
| MA Baozhong |
北京科技大学冶金与生态工程学院 |
| ZHANG Wenjuan |
北京科技大学冶金与生态工程学院 |
| CHEN Yongqiang |
北京科技大学冶金与生态工程学院 |
| WANG Chengyan |
北京科技大学冶金与生态工程学院 |
| YU Jiancheng |
北京科技大学冶金与生态工程学院 |
| WU Tianyi |
北京科技大学冶金与生态工程学院 |
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| Abstract: |
| Based on the characteristics of large scale and high leaching cost of low-grade copper-nickel-cobalt ores, a heap leaching process was proposed to extract valuable metals. In a pile leaching column of Φ290 mm×6 000 mm, the expansion experiment of sulfuric acid heap leaching was carried out to simulate an industrial yard. The effects of ore proportion, particle size, leaching days, and bacteria addition on the leaching process were investigated. The results show that the final Cu leaching rate can reach 73%, the leaching rate of Co and Ni can be improved by adding ferrous sulfate, and the amount of sulfuric acid can be decreased by adding bacteria. This research can provide technical support for the industrial application of heap leaching of low-grade copper-nickel-cobalt ores. |
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