Investigation on Recovery of Copper from Smelting Slag by Asynchronous Flotation

WANG Pengcheng; WANG Hongcheng; DOU Sunping; WANG Shuai; ZHU Xianwen

doi:10.13779/j.cnki.issn1001-0076.2021.05.016

2021 Vol. 41, No. 5

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Article navigation > Conservation and Utilization of Mineral Resources > 2021 > 41(5): 118-122

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WANG Pengcheng, WANG Hongcheng, DOU Sunping, WANG Shuai, ZHU Xianwen. Investigation on Recovery of Copper from Smelting Slag by Asynchronous Flotation[J]. Conservation and Utilization of Mineral Resources, 2021, 41(5): 118-122. doi: 10.13779/j.cnki.issn1001-0076.2021.05.016

Citation:

WANG Pengcheng, WANG Hongcheng, DOU Sunping, WANG Shuai, ZHU Xianwen. Investigation on Recovery of Copper from Smelting Slag by Asynchronous Flotation[J]. Conservation and Utilization of Mineral Resources, 2021, 41(5): 118-122. doi: 10.13779/j.cnki.issn1001-0076.2021.05.016

Investigation on Recovery of Copper from Smelting Slag by Asynchronous Flotation

1.
Technology Development of Western Mining Group Co., Ltd, Xining 810006, Qinghai, China
2.
Research Center of Nonferrous Mineral Resources of Engineering and Technology in Qinghai Province, Xining 810006, Qinghai, China
3.
Qinghai province key laboratory of Plateau Mineral Processing Engineering and Comprehensive Utilization, Xining 810006, Qinghai, China
4.
Xizang Yulong Copper Industry Co., Ltd., Changdu 854000, Xizang, China

Received Date: 16 October 2021

Publish Date: 25 October 2021

Abstract

Abstract

The copper grade in copper smelting slag is 5.23%, which has good recycling value. Copper minerals in the raw slag are mainly matte and metallic copper. The gangue minerals are mainly ferrite and iron olivine. There are a large number of glass phases. The existence of glass phase has an adverse impact on beneficiation. Asynchronous flotation process is adopted for the smelting slag to preferentially recover coarse-grained copper minerals with good floatability under coarse grinding fineness. The copper concentrate with copper content of 45.36% and copper recovery of 81.65% was obtained. Fine grained copper minerals are recovered after regrinding of flotation tailings. The comprehensive copper concentrate with copper content of 13.65% and copper recovery of 13.74% was obtained. The concentrate contains 33.99% copper, 3.42 g/t gold and 79.17 g/t silver. The recovery rate gold and silver are 95.40%, 85.94% and 81.17% respectively. The copper, gold and silver in the smelting slag are all well recovered.
- copper smelting slag /
- stage grinding /
- asynchronous flotation /
- matte

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References

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