Oxidation leaching of tin anode slime by controlling potential

The selective leaching of tin anode slime was extremely important in the process of the recovery of tin anode slime. With the successful leaching, the efficiency of value metals recycling was elevated obviously. Hence, the pretreatment of tin anode slime was studied in this paper by using the enviro...

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Bibliographic Details
Published inIOP conference series. Earth and environmental science Vol. 345; no. 1; pp. 12014 - 12023
Main Authors Chen, Wei-Sheng, Zhong, Yi-Fan, Wang, Li-Pang
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.10.2019
Subjects
Anode sludge
Anodizing
Antimony
Bismuth
Copper
Heavy metals
Leaching
Oxidation
Silver
Slime
Sodium chlorate
Tin
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Summary:The selective leaching of tin anode slime was extremely important in the process of the recovery of tin anode slime. With the successful leaching, the efficiency of value metals recycling was elevated obviously. Hence, the pretreatment of tin anode slime was studied in this paper by using the environmental technology and hydrometallurgical approach to achieve the goal of valuable metal recovery from traditional waste tin anode slime. It is worth noting that there are a large amount of value metals including Sn, Sb, Bi, Cu and Ag in the tin anode slime. The results indicated the optimal conditions of leaching process are 3.0 M HCl with 0.1M NaClO3 and liquid-solid mass ratio of 30 ml/g in 30 minutes at 45 degrees of Celsius and about Sn 85.32%, Sb 96.93%, Bi 97.63%. Meanwhile, silver and copper were all leached out by HCl solution in the leaching of tin anode slime.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/345/1/012014