Study on Behavior of Impurity Antimony in Zinc Electrowinning
By means of an electrochemical study, the influence of Sb3+ on cathode polarization process in zinc electrowinning and its kinetics equation and parameters have been studied. The results show that antimony has a depolarization function in the presence of [Sb3+] ≥0.5 mg·L–1 in zinc electrowinning, and Sb3+ has a polarization function in zinc electrowinning in the presence of [Sb3+] ≥1 mg·L–1, the polarization curve enters into the hydrogen evolution range from the activation range, which indicates that the presence of antimony has adverse influence on the zinc electrowinning process.
Jinglong Bu, Pengcheng Wang, Liqun Ai, Xiaoming Sang, Yungang Li
X. H. Yu et al., "Study on Behavior of Impurity Antimony in Zinc Electrowinning", Advanced Materials Research, Vols. 287-290, pp. 2957-2960, 2011