Title :
Removal of Tin from Alkaline Zinc Solution by Zinc Powder Cementation
Author :
Jiang Jiachao ; Chen Wei ; Hu xiang ; Zhao Youcai
Author_Institution :
State Key Lab. of Pollution Control & Resource Reuse, Tongji Univ., Shanghai, China
Abstract :
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°C, 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.
Keywords :
cathodes; electrolytes; electrowinning; industrial waste; tin; alkaline electrolyte; alkaline zinc solution; cathode; chemical method; temperature 95 C; tin removal; waste treatment; zinc electrowinning; zinc powder cementation; Cathodes; Chemicals; Electrochemical processes; Hydrogen; Leaching; Powders; Surface treatment; Testing; Tin; Zinc;
Conference_Titel :
Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-4712-1
Electronic_ISBN :
2151-7614
DOI :
10.1109/ICBBE.2010.5516761
