中國有色金屬學報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 14 No. 3 June 2004 |
system of Zn(Ⅱ)-NH3-NH4Cl-H2O①
CHEN Yi-feng(陳藝鋒), TANG Chao-bo(唐朝波), HE Jing(何 靜)
（College of Metallurgical Science and Engineering, Central South University,
Changsha 410083, China）
Abstract:The anodic reaction kinetics of zinc electrowinning was investigated on the titanium base RuO2anode in the system of Zn(Ⅱ)-NH3-NH4Cl-H2O. The effects of stirring speed, ammonium chloride concentration and temperature on anodic reaction rate were studied through the curve measurement of potentiostatic polarization. The results reveal that the electrochemically controlled anodic reaction obeys Tafel equation and the anodic reaction order for ammonium chloride is 1.
056, with the apparent activation energy of 40.17 kJ/mol. The general equation of anodic reaction kinetics was obtained.
Key words: zinc electrowinning; anodic reaction; kinetics; Ti-RuO2anode
