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A Combined Process of Beneficiation and Metallurgical Route for Recovering Copper and Lead from Copper Smelting Dust
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Siyuan WU1, Rongdong DENG1, 2, Zhuzhu GUO1, Shijie XIAO4, Bao GUO1, 2, Chunhui GAO1, 3, Xiangxiang CHEN1, 2, Kaixi JIANG1, 2, 3
Mining and Metallurgical Engineering | 2026, 46(1) : 152 - 158
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Mining and Metallurgical Engineering | 2026, 46(1): 152-158
• METALLURGY •
A Combined Process of Beneficiation and Metallurgical Route for Recovering Copper and Lead from Copper Smelting Dust
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Siyuan WU1, Rongdong DENG1, 2, Zhuzhu GUO1, Shijie XIAO4, Bao GUO1, 2, Chunhui GAO1, 3, Xiangxiang CHEN1, 2, Kaixi JIANG1, 2, 3
Affiliations
  • 1.Zijin School of Geology and Mining, Fuzhou University, Fuzhou 350108, Fujian, China
  • 2.Fujian Key Laboratory of Green Extraction and High-Value Utilization of New Energy Metals, Fuzhou University, Fuzhou 350108, Fujian, China
  • 3.Zijin Mining Group Co., Ltd., Shanghang 364200, Fujian, China
  • 4.Kunming Metallurgical Research Institute Co., Ltd., Kunming 650031, Yunnan, China
doi: 10.3969/j.issn.0253-6099.2026.01.025
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In consideration of high-content of copper and lead therein, copper smelting dust was decided to be leached with a mixed solution of sulfuric acid and sodium chloride. The leachate was then subjected to zinc powder replacement for recovering sponge copper, and the leaching residue was subjected to flotation to achieve effective separation between copper and lead. It is found that with sulfuric acid at an initial concentration of 2.0 mol/L, sodium chloride at concentration of 4.0 mol/L and liquid-solid ratio of 4∶1, 2-h leaching at 90 ℃ results in leaching rates of As and Cu reaching 99.19% and 80.69%, respectively; and the copper replacement rate reaches 92.48% from the copper containing solution with pH of 2 at 50 ℃ by replacing with zinc powder at an amount of 1.8 times of solution. Surface analysis technique reveals that Bi (Ⅲ) remaining on the surface of copper sulfide significantly inhibits the flotation of copper sulfide. Therefore, washing pretreatment shall be added before flotation. After that, a flotation process consisting of one roughing, two cleaning and two scavenging can produce a copper concentrate grading 56.17% Cu at 94.15% recovery, and a lead concentrate with 58.01% Pb grade at 99.14% recovery. It is concluded that this comprehensive treatment by a combined beneficiation and metallurgical route for copper smelter dust can provide a reference in the treatment of other smelting dusts.

copper smelter dust  /  leaching  /  flotation  /  recovery  /  copper  /  lead  /  sponge copper
吴思远, 邓荣东, 郭珠珠, 肖世洁, 郭宝, 郜春辉, 陈享享, 蒋开喜. 铜冶炼烟尘选冶联合回收铜和铅工艺研究. 矿冶工程杂志, 2026 , 46 (1) : 152 -158 . DOI: 10.3969/j.issn.0253-6099.2026.01.025
Siyuan WU, Rongdong DENG, Zhuzhu GUO, Shijie XIAO, Bao GUO, Chunhui GAO, Xiangxiang CHEN, Kaixi JIANG. A Combined Process of Beneficiation and Metallurgical Route for Recovering Copper and Lead from Copper Smelting Dust[J]. Mining and Metallurgical Engineering, 2026 , 46 (1) : 152 -158 . DOI: 10.3969/j.issn.0253-6099.2026.01.025
Appendix
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Year 2026 volume 46 Issue 1
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Article Info
doi: 10.3969/j.issn.0253-6099.2026.01.025
  • Receive Date：2025-08-15
  • Online Date：2026-10-08
Article Data
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  • Received：2025-08-15
Funding
Affiliations
    1.Zijin School of Geology and Mining, Fuzhou University, Fuzhou 350108, Fujian, China
    2.Fujian Key Laboratory of Green Extraction and High-Value Utilization of New Energy Metals, Fuzhou University, Fuzhou 350108, Fujian, China
    3.Zijin Mining Group Co., Ltd., Shanghang 364200, Fujian, China
    4.Kunming Metallurgical Research Institute Co., Ltd., Kunming 650031, Yunnan, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2026.01.025
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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