The Behaviour of Low Arsenic Copper Anodes at High Current Density in Electrorefining

• Autorzy: Zhang Xuyong , Chen Silei , Li Lu , Yang Peng

Identyfikatory

DOI

10.24425/amm.2023.146203

• Języki publikacji: EN

Abstrakty

EN

Arsenic is the only beneficial impurity for copper electrorefining through inhibiting anode passivation and the formation of floating slimes. The behaviour of copper anodes with different content of arsenic were studied at high current density (>280 A/m²). It showed that low arsenic anodes (As < 300 ppm) easily generated anode passivation, floating slimes and cathode nodules during the electrorefining proccess. The floating slimes, electrolyte, cathode and anode were observed and analyzed. As result, low arsenic anodes were more likely to be passivated due to their microstructure defects and irregular microstructure. Increasing electrolyte temperature and addition of glycerol were propitious to reduce low arsenic anodes’ passivation. The floating slimes occured when the concentration of As(III) in electrolyte decreased to 1 g/L, and they would be precipitated by polyacrylamide. All measures greatly improved the cathode quality at current density of 300 A/m².

Słowa kluczowe

EN

low arsenic anodes; high current density; anode passivation; floating slimes; cathode nodules

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2023
• Tom: Vol. 68, iss. 4
• Strony: 1377--1382
• Opis fizyczny: Bibliogr. 26 poz. fot., rys., tab., wzory

Twórcy

autor

Zhang Xuyong

• Jiangxi Copper Technology Institute Co., Ltd, Nanchang 330096, Jiangxi, PR China

• https://orcid.org/0000-0001-5281-5138

autor

Chen Silei

• Jiangxi Copper Technology Institute Co., Ltd, Nanchang 330096, Jiangxi, PR China

• https://orcid.org/0000-0002-3200-0684

autor

Li Lu

• Jiangxi Copper Technology Institute Co., Ltd, Nanchang 330096, Jiangxi, PR China

• https://orcid.org/0000-0003-1615-519X

autor

Yang Peng

• Jiangxi Copper Technology Institute Co., Ltd, Nanchang 330096, Jiangxi, PR China

• https://orcid.org/0000-0003-1821-080X

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025)