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Reductive leaching of indium from the residue of neutral leaching by using oxalic acid in sulfuric acid solution
| Content Provider | Semantic Scholar |
|---|---|
| Author | Maddah, Fayrouz El Alitabar, Mohammad Yoozbashizadeh, H. |
| Copyright Year | 2020 |
| Abstract | The present study sought to assess the reductive leaching of indium from indium-bearing zinc ferrite by using oxalic acid as reducer in sulfuric acid solution. The effect of more main factors affecting the procedure on process rate, including the ratio of oxalic acid to sulfuric acid, stirring rate, grain size, temperature and the initial concentration of synergic acid was precisely evaluated. The results confirmed the acceptable efficiency of dissolving indium in the presence of oxalic acid, representing that shrinking-core model with chemical reaction controlling step can describe the kinetics of indium dissolution correctly. Based on the apparent activation energy of 44.55 KJ/mole and reaction order with respect to the acid concentration of 1.14, it was found that the presence of oxalic acid reduces sensitivity to temperature changes and increases the effect of changes in acid concentration. Finally, the equation of kinetic model based on the factors under study was presented. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://ijmmm.ustb.edu.cn/fileKWYJYCLXB/journal/article/ijmmm/newcreate/2019-0771.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |