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Separation and Recovery of Copper and Arsenic from Black Copper Slime by Oxidation Leaching Method
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Lei WANG1, 2, Guotao YANG1, Feng ZHANG1, Huinan ZHANG1, 2
Hydrometallurgy of China | 2024, 43(1) : 15 - 19
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Hydrometallurgy of China | 2024, 43(1): 15-19
• Experiment Research •
Separation and Recovery of Copper and Arsenic from Black Copper Slime by Oxidation Leaching Method
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Lei WANG1, 2, Guotao YANG1, Feng ZHANG1, Huinan ZHANG1, 2
Affiliations
  • 1 Shandong Humon Smelting Co., Ltd., Yantai 264109, China
  • 2 Yantai Key Laboratory of Gold and Copper Concentrate Clean Smelting, Yantai 264109, China
Published: 2024-02-20 doi: 10.13355/j.cnki.sfyj.2024.01.003
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The comprehensive recovery of copper and arsenic from black copper slime by oxidation leaching method was studied. The effects of acidity, hydrogen peroxide content, temperature, leaching time and liquid volume to solid mass ratio on the leaching rate of copper and arsenic were investigated. The results show that under the conditions of acidity of 200 g/L, hydrogen peroxide content of 30%, temperature of 80 ℃, leaching time of 2.0 h, liquid volume to solid mass ratio of 9∶1, the leaching rates of copper and arsenic can reach 99.53% and 98.24%, respectively. After oxidative acid leaching, sodium hydrosulfide is added into the solution at the rate of n(NaHS)/n(Cu)=1.1 to precipitate copper. The mass concentration of copper in the solution after copper and arsenic separation is lower than 0.01 g/L, and the mass concentration of arsenic is greater than 40 g/L. The copper and arsenic are effectively separated. Arsenic-rich liquid can be reduced with sulfur dioxide, and arsenic trioxide and reduced liquid can be returned to the oxidation leaching process.

black copper slime  /  oxidation leaching  /  hydrogen peroxide  /  sodium hydrosulfide  /  copper  /  arsenic  /  separation  /  comprehensive recovery
Lei WANG, Guotao YANG, Feng ZHANG, Huinan ZHANG. Separation and Recovery of Copper and Arsenic from Black Copper Slime by Oxidation Leaching Method[J]. Hydrometallurgy of China, 2024 , 43 (1) : 15 -19 . DOI: 10.13355/j.cnki.sfyj.2024.01.003
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doi: 10.13355/j.cnki.sfyj.2024.01.003
  • Receive Date：2023-09-18
  • Online Date：2025-09-10
  • Published：2024-02-20
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  • Received：2023-09-18
Affiliations
    1 Shandong Humon Smelting Co., Ltd., Yantai 264109, China
    2 Yantai Key Laboratory of Gold and Copper Concentrate Clean Smelting, Yantai 264109, China
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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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