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

fYear

2010

fDate

18-20 June 2010

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on

Conference_Location

Chengdu

ISSN

2151-7614

Print_ISBN

978-1-4244-4712-1

Electronic_ISBN

2151-7614

Type

conf

DOI

10.1109/ICBBE.2010.5516761

Filename

5516761