中國有色金屬學(xué)報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 12 No. 2 April 2002 |
of high-silver g alena concentrate
SI Yun-sen(司云森)2, ZHANG Ying-jie(張英杰)2
（1.Faculty of Material and Metallurgy Engineering,
Kunming University of Science and Technology,
Kunming 650093, China；
2.Faculty of Science, Kunming University of Science and
Technology, Kunming 650093, China）
Abstract:Effects of various technological conditions such as ρ(Cl-), ρ(Fe)T , pH value and temperature on the cell voltage, lead leaching rate and the cathodic current efficiency of the slurry electrolysis of high-silver galena concentrate were studied, and the behavior regularity of lead and silver was investigat ed. As a result, the suitable condition was determined as: ρ(Cl-)230g/L, ρ(Fe)T15g/L, pH 1, temperature 70℃, electrolysis time 6h. Under such condition, adopting the cathodic current density of 150A/m2 and the liquid-solid ratio of 15∶1, lead powder with a purity degree of 91.18% was got. At the same time, leaching rate of lead, leaching rate of silver and cathodic current efficiency amounted to 96.88%, 70.88% and 75.68% respectively.
Key words: slurry electrolysis; technological condition; galena
