摘要
采用碘化钠沉银-硫化钠转型-硝酸转型工艺回收铜阳极泥预处理上清液中的银,确定了最佳工艺条件。沉银率最高可达96.56%,沉银后液银含量降至4 mg/L;粗银粉纯度达95%以上。
The silver in the supernatant,produced from copper anode slime pretreatment is recovered by silver precipitation with NaI-transformation with Na2 S and then HNO3. And the optimal process conditions are determined. The results show that the silver recovery canreach 96.56% ,the silver content in the precipitated Ag solution is reduced down to 4 mg/L and the purity of crude silver is above 95%.
出处
《稀有金属与硬质合金》
CAS
CSCD
北大核心
2009年第4期32-35,共4页
Rare Metals and Cemented Carbides
关键词
银
回收
铜阳极泥
上清液
碘化钠
硫化钠
silver
recovery
copper anode slime
supernatant
NaI
Na2S