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| Gold Extraction from Refractory Gold Ore with High Gangue Contents by Heavy Salt Water |
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Received:October 23, 2020
Revised:October 28, 2020
Accepted:November 02, 2020
Published Online:January 21, 2021
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| DOI：doi：10.3969/j.issn.1007-7545.2021.02.013 |
| KeyWord:refractory gold ore; heavy salt water; basic gangue; sodium hypochlorite |
| Author | Institution |
| WU Zeng-ling |
紫金矿业集团股份有限公司低品位难处理金矿资源综合利用国家重点实验室 |
| FAN Dao-yan |
紫金矿业集团股份有限公司低品位难处理金矿资源综合利用国家重点实验室 |
| WANG Qian-kun |
紫金矿业集团股份有限公司低品位难处理金矿资源综合利用国家重点实验室 |
| LIN Wei |
诺顿金田有限公司,澳大利亚 卡尔古利 |
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| Abstract: |
| Surface water and ground water in the mining area have high salinity and production cost of desalination water is high, which affects utilization of refractory gold resources. Tests on sodium hypochlorite oxidation and cyanidation were conducted for gold extraction from refractory gold ore with high gangue contents by heavy salt water. Effects of NaClO dosage, oxidation time and cyanidation process on gold extraction were investigated. Gold extraction rate rises from 26.8% to 88.1%—97.6% and gold grade of residues drops to 0.07-0.36 g/t after oxidation with sodium hypochlorite of 94.5 kg/t above for 2—4 h. |
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