中國有色金屬學(xué)報(bào)(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 11 No. 4 August 2001 |
Kinetics of electrochemical process of
galena electrode in diethyldithiocarbamate solution
galena electrode in diethyldithiocarbamate solution
QIN Wen-qing(覃文慶), QIU Guan-zhou(邱冠周),
HU Yue-hua(胡岳華), XU Jing(徐 競(jìng))
HU Yue-hua(胡岳華), XU Jing(徐 競(jìng))
（Department of Mineral Processing, Central South University,
Changsha 410083, P.R.China）
Abstract:The electrode process of galena in diethyldithiocarbamate (DDTC) solution at pH 11.4 has been investigated using cyclic voltammetry, potentiostatic and chronopotentiometry. Electrodeposit of PbD2 on galena electrode surface can occur while the electrode potential is higher than -0.05V. The relationship between the current density caused by diffusion and reaction time has been ascertained, and the diffusion coefficient of DDTC on galena surface in DDTC solution is about 1. 12×10-6 cm2/s. A passive PbD2 film covers the surface of galena electrode.
Key words: electrode process; galena; electrochemistry of flotation
