PbSO_4、PbO在柠檬酸钠溶液中溶解行为  

Dissolution behavior of PbSO_4 and PbO in sodium citrate solution

作　　者：何东升[1,2] 李巧双 杨典奇 杨聪[2] 王贤晨 杨家宽[1] 

机构地区：[1]华中科技大学环境科学与工程学院,湖北武汉430074 [2]武汉工程大学环境与城市建设学院,湖北武汉430073

出　　处：《化工进展》2014年第2期333-336,共4页Chemical Industry and Engineering Progress

基　　金：教育部新世纪人才支持计划(NCET-09-0392);湖北省自然科学基金重点项目(杰出青年基金;2011CDA083);武汉工程大学科学研究基金(13105043);武汉工程大学第八届校长基金(2013061)

摘　　要：考察了溶解时间、溶解温度、柠檬酸钠浓度以及柠檬酸加入量对PbSO4、PbO在柠檬酸钠溶液中溶解行为影响。结果表明,PbO溶解0.5 h即可达到溶解平衡,而PbSO4溶解率则会在达到最大值51.16%后随溶解时间延长而降低。随溶解温度升高,PbSO4溶解率增大,PbO溶解率降低,最大降低37.98%;PbSO4、PbO溶解率均会随着柠檬酸钠浓度的提高而增大,且前者增大趋势更明显;增大柠檬酸加入量,PbSO4溶解率减小至6.39%,PbO溶解率则可增大至97.32%。研究结果可为柠檬酸法处理废铅酸蓄电池铅膏工艺提供基础性数据和理论支持。Effects of dissolution time,dissolution temperature,the concentration of sodium citrate and the addition amount of citric acid on dissolution behaviors of PbSO4 and PbO in sodium citrate solution were investigated. The results showed that PbO dissolution rate reached 5 1 . 1 6% after dissolving for 0.5 h,and with the increase of dissolution time,PbSO4 dissolution rate first increased and then decreased. PbSO4 dissolution rate increased and PbO dissolution rate decreased 37.98% with the increase of dissolution temperature,however,both of them increased when increasing the concentration of citric sodium. With the increase of citric acid addition,PbSO4 dissolution rate decreased to 6 . 3 9%, by contrast,PbO dissolution rate obviously increased,reached 9 7 . 3 2%. The results have provided basic data and theoretical support for new technology of recovering lead from used lead-acid battery with citric acid-sodium citrate solution.

关 键 词：硫酸铅 氧化铅 柠檬酸钠 溶解 

分 类 号：TF812[冶金工程—有色金属冶金]