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| Research on Removal of Impurities in Final Decoppering Solution by Gas-Liquid Vulcanization and Reuse to Copper Electrolysis System |
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Received:October 28, 2021
Revised:October 28, 2021
Accepted:November 06, 2021
Published Online:February 18, 2022
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| DOI：doi：10.3969/j.issn.1007-7545.2022.03.018 |
| KeyWord:final solution for copper removal; gas-liquid vulcanization; circulation; copper electrolysis |
| Author | Institution |
| LIN Guo-biao |
紫金铜业有限公司 |
| QIU Jian-sen |
紫金铜业有限公司 |
| LIN Fan |
紫金铜业有限公司 |
| LIN Jin-fu |
紫金铜业有限公司 |
| ZHONG Lin-yan |
紫金铜业有限公司 |
| CAO Xiu-wen |
紫金铜业有限公司 |
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| Abstract: |
| With the increase of impurity content in raw copper concentrate, impurity removal ability of original liquid cannot meet the requirement, so the final liquid needs to be opened every day, which not only increases cost of wastewater treatment, but also causes loss of nickel and acid, at the same time, the lost acid should be added in the process of copper electrolysis. Through the study on treatment of open-circuit final solution of copper removal, removal rate of arsenic, antimony and bismuth in final solution of copper removal is over 98% after impurity removal treatment by gas-liquid sulfuration with NaHS, however, nickel and acid are not lost, and quality of high purity cathode copper will not be adversely affected by return of treated solution to electrolytic system. This process has the characteristics of low investment, stable index, and remarkable benefit. |
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