摘要
本文研究了用氨-铵浸出法从贵阳市某电镀厂的电镀污泥中浸出锌的最佳工艺条件。得到在颗粒度为120目、固液(污泥质量/水的体积)比为1∶4、氨-铵体积比为1∶5、加总氨量(NH3-NH4+总体积)为12m L、浸出时间为120min、温度为30℃的最佳浸出工艺条件,此时锌的浸出率达到91.5%,为后续其他重金属进一步回收工艺奠定了良好的基础。
The zinc was separated from the electroplating sludge which from an eleetroplating factory in Gniyang by using the ammonia - ammonium sulfate leaching method and the best conditions of leaching process was selected in this paper. The optimal leaching conditions were determined： particle size 120 meshes, solid- liquid ratio（ sludge quality/the volume of water） is 1：4, the total amount of ammonia（ the total volume of NH3 -NH4 ＋ ） is 12mL, the volume ratio of ammonia - ammonium sulfate is1 ： 5 and the leaching time is 120 minutes under the temperature of 30 centigrade. Under these conditions,maximum leaching rate of Zn can reach 91.5% for it, which lay a better foundation for subsequent further recovery process of the other heavy metals.
出处
《山东化工》
CAS
2015年第17期177-179,182,共4页
Shandong Chemical Industry
基金
铝合金化学镀镍关键技术开发[合同编号:黔科合GY字(2013)3035]
关键词
电镀污泥
浸出率
锌回收
electroplating sludge
leaching rate
zinc recovery
