环境工程学报2013，Vol.7Issue(1)：143-148,6.
硫酸铅在柠檬酸钠-乙酸体系中的浸出转化
Leaching and desulphurisation of PbSO4 in sodium citrate and acetic acid solution
摘要
Abstract
In this study, to achieve lead recovery simultaneously with desulphurization, PbSO4 were reacted with sodium citrate and acetic acid in aqueous media, and lead was recovered as lead citrate in this process. Optimal leaching conditions were determined by investigating the effect of concentration, reaction time, the initial PbSO4/water and temperature. The results show that the conversion rate of PbSO4 in the solution increases with the increase of the concentration of sodium citrate and reaction time, while other factors show no significant effects. The remaining lead content in the filtrate solution only increases with the increase of the concentration of sodium citrate. The optimal conditions for leaching 1 mol of PbSO4 at 25℃ were found to be: 2 mol of sodium citrate solution; 2 h of reaction time and 1/3 ~ 1/5 as the starting PbSO4/water ratio. Under the experimental conditions, the conversion rate of PbSO4 was about 99% , and the remaining lead content in the filtrate solution was 3. 8% of the total lead. Pure citrate product [Pb3 ( C6H5O7)2 ] · 3H2O was crystallized from the solution, which could be decomposed to PbO/Pb powder at 350℃.关键词
废旧铅酸蓄电池/硫酸铅/湿法工艺/柠檬酸铅/转化率/铅回收Key words
spent lead acid battery/ lead sulfate/ hydrometallurgy/ lead citrate/ conversion rate/ lead recovery分类
矿业与冶金引用本文复制引用
刘玲静,何雄,朱新锋,李磊,杨丹妮,杨家宽..硫酸铅在柠檬酸钠-乙酸体系中的浸出转化[J].环境工程学报,2013,7(1):143-148,6.基金项目
国家自然科学基金资助项目(50804017) （50804017）
国家大学生科技创新活动基金资助项目(2009056) （2009056）
武汉市科技攻关计划项目(20120321100) （20120321100）
湖北省自然科学基金重点项目(杰出青年基金)(2011CDA083) （杰出青年基金）
