中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 34 No. 11 November 2024 |
（1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;
2. Zhejiang Libo Industrial Co., Ltd., Shaoxing 312000, China;
3. College of Mechanical and Energy Engineering, Shaoyang University, Shaoyang 422000, China;
4. Zhuzhou Smelter Group Co., Ltd., Zhuzhou 412000, China）
Abstract:Fe2+ dissolution method and manual method were used to remove the anode slime and their effects on properties of cast Pb-0.6wt.%Ag anode and zinc electrowinning were compared. The results reveal that the Fe2+ dissolution method can avoid mechanical damage to the oxide film layer on the anode surface, which cannot be achieved by traditional manual method. This can lower the anode corrosion rate by 57.14%, thus reducing Pb contamination in electrolyte and zinc products. Meanwhile, compared with manual method, Fe2+ dissolution method can significantly improve the electrocatalytic activity of the anode and lower the initial power consumption of zinc electrowinning to 2720 kW·h/t after removing anode slime.
Key words: Pb-Ag anode; zinc electrowinning; anode slime removing; electrochemical properties
