Preparation of Black Copper Electrolyte by Acid Oxidation Leaching of Refining Slag

LI Jun; ZHOU Zhaoan; LIU Xiaowen; MAO Anzhang; SUN Yanjun; ZHOU Aiqing

doi:10.3969/j.issn.1000-6532.2024.03.024

2024 No. 3

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Article navigation > Multipurpose Utilization of Mineral Resources > 2024 > 45(3): 157-160

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LI Jun, ZHOU Zhaoan, LIU Xiaowen, MAO Anzhang, SUN Yanjun, ZHOU Aiqing. Preparation of Black Copper Electrolyte by Acid Oxidation Leaching of Refining Slag[J]. Multipurpose Utilization of Mineral Resources, 2024, 45(3): 157-160. doi: 10.3969/j.issn.1000-6532.2024.03.024

Citation:

LI Jun, ZHOU Zhaoan, LIU Xiaowen, MAO Anzhang, SUN Yanjun, ZHOU Aiqing. Preparation of Black Copper Electrolyte by Acid Oxidation Leaching of Refining Slag[J]. Multipurpose Utilization of Mineral Resources, 2024, 45(3): 157-160. doi: 10.3969/j.issn.1000-6532.2024.03.024

Preparation of Black Copper Electrolyte by Acid Oxidation Leaching of Refining Slag

Guangdong Feinan Resources Recycling Co., Ltd., Zhaoqing 526233, Guangdong, China

Received Date: 26 August 2022

Publish Date: 25 June 2024

Abstract

Abstract

This is an article in the field of metallurgical engineering. The preparation of black copper electrolyte by removing copper from secondary refining slag of high copper and high tin anode furnace by hydrogen peroxide oxidation and acid leaching was studied. The process conditions related to the removal efficiency of the copper and arsenic were researched including the hydrogen peroxide dosage, reaction temperature, sulfuric acid concentration and reaction time. Results show that, under the following optimal conditions, including refining slag of 20.0 g, 2.5 mol/L sulfuric acid of 200 mL, solid-liquid ratio of 1/10, temperature of 65 ℃, dosage of hydrogen peroxide of 10.0 mL, stirring speed of 400 r/min and leaching time of 60 min, the leaching ratios of Cu and As can reach 88.98% and 87.33%, respectively, and the leaching ratios of Ni and Sn were only 7.72% and 1.34%, respectively. The concentration of copper ion in the leaching solution was 48.48 g/L, which can be used as the supplement of black copper electrolyte.
- Metallurgical engineering /
- Refining slag /
- Removal /
- Oxidation leaching /
- Copper electrolyte

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References

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