电积
铜
阴极
电解质
冶金
浸出(土壤学)
电流(流体)
化学
材料科学
电极
物理化学
环境科学
土壤水分
土壤科学
电气工程
工程类
作者
Wei Yang,Yan Wang,Bo Li,Yonggang Wei,Xingming Jiang
标识
DOI:10.1016/j.mineng.2022.107942
摘要
To overcome the interference of Fe3+ in a leaching solution on copper electrowinning, a new copper electrowinning recovery process was developed by cyclone electrowinning (CE). The effects of Fe3+ on copper recovery, cathode copper morphology, and current efficiency under CE were studied. The addition amount of Fe3+ almost has no effect on the purity and electrowinning rate of cathode copper but affects the current efficiency of CE. The current efficiency decreases with the increase in Fe3+ concentration The current efficiency of first stage decreased from 99.6 % to 38.23 %. The current efficiency of second stage slightly decreased from 94.33 % to 77.94 %. The current efficiency of third stage decreased from 72.61 % to 27.2 %. The grain size of cathode copper with a high Fe3+ concentration increases, and the overall quality decreases. Therefore, the concentration of Fe3+ in the electrolyte should be properly controlled to efficiently obtain the copper cathode with good morphology before the CE of copper.
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