中文摘要：

本实验采用柠檬酸／柠檬酸钠体系浸出回收铅膏，考察杂质锌在浸出过程中的迁移。模拟铅膏中掺入了氧化锌，锌的质量分数为1％、0．5％、0．1％、0．05％和0．01％。随锌含量的减少，残留在柠檬酸铅、铅粉中的锌量越少。掺锌量为0．01％时，铅粉中锌的质量分数降到0．00043％。实际铅膏也进行了浸出、焙烧实验，铅粉中锌的质量分数减少到了0．00013％，远远小于GB／T469-2005中对锌的要求。

英文摘要：

The paper studied the migration of zinc impurities in the process of citric acid/sodium citrate leaching the recycled lead paste. The zinc content was 1%, 0.5 %, 0.1%, 0.05 % and 0.01% respectively in the simulated lead paste doping zinc oxide. With the decrease of doped zinc content, the residuai zinc content in lead citrate and lead powder was reduced, when the doped zinc content was 0.01%, the zinc content in the leady oxide was reduced to 0.000 43 %. After leaching and roasting the actual lead paste, the content of zinc in leady oxide was reduced to 0.000 13 % which was enough to meet the standard of GB/T 469-2005.