Removal of tin from alkaline zinc solution by zinc powder cementation
In this work, the influence of tin on electrowinning of zinc from alkaline solution was observed. Tin changed the deposited zinc into compact form, made zinc hardly peel off from cathodes and should be separated from alkaline electrolyte before zinc electrowinning. Experiments for Sn removal from alkaline zinc solution by several chemical methods were tested. It was found that Sn can be cemented quantitatively from alkaline zinc solution by the addition of zinc powder at 95 ℃, 500 rpm with Zn/Sn molar ratio 6. The resulted Sn concentration in solution can be lower than 50 mg/L by zinc powder cementation. The experimental results were encouraging and practical for zinc recovery from Zn-Sn contained wastes by alkaline treatment.
Jiang Jiachao Chen Wei Hu Xiang Zhao Youcai
State Key Laboratory of Pollution Control and Resource Reuse Tongji University Shanghai, China
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）