Copper Recovery from a Zinc Smelting Slag

JING Gaogui; NI Zhangyuan; SUN Wei; GAO Zhiyong

doi:10.13779/j.cnki.issn1001-0076.2020.05.015

2020 Vol. 40, No. 5

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JING Gaogui, NI Zhangyuan, SUN Wei, GAO Zhiyong. Copper Recovery from a Zinc Smelting Slag[J]. Conservation and Utilization of Mineral Resources, 2020, 40(5): 116-122. doi: 10.13779/j.cnki.issn1001-0076.2020.05.015

Citation:

JING Gaogui, NI Zhangyuan, SUN Wei, GAO Zhiyong. Copper Recovery from a Zinc Smelting Slag[J]. Conservation and Utilization of Mineral Resources, 2020, 40(5): 116-122. doi: 10.13779/j.cnki.issn1001-0076.2020.05.015

Copper Recovery from a Zinc Smelting Slag

1.
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
2.
Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources, Central South University, Changsha 410083, China

More Information

Corresponding author: GAO Zhiyong, zhiyong.gao@csu.edu.cn

Received Date: 15 May 2020

Publish Date: 25 October 2020

Abstract

Abstract

The copper grade of a complex zinc smelting slag from Hubei is around 1.01%. The main occurrence state of the copper is in the form of isomorphism in pyrrhotite, then is in the iron oxide (magnetite and hematite). Gangue minerals are mainly glassiness. After researching the mineral composition and copper occurrence state, the experiments on recovery of copper were carried out for raw smelting slag samples and tailings after magnetic separation, respectively. The influence of different types of activators and collectors on copper recovery was launched. The results indicate that, using combined collectors of ammonium aerofloat + ethyl thiocarbamate for roughing process of raw smelting slag samples, adopting open-circuit flotation technological flowsheet of one roughing, two cleaning and one scavenging, copper concentrate with a copper grade of 5.10% and recovery of 66.09% can be obtained. Using collector of ammonium aerofloat for roughing process of raw smelting slag tailings after magnetic separation, adopting open-circuit flotation technological flowsheet of one roughing, two cleaning and one scavenging, copper concentrate with a copper grade of 3.45% and recovery of 57.61% can be obtained.
- zinc smelting slag /
- pyrrhotite /
- magnetite /
- hematite /
- flotation

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References

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