| Title |
Leaching of Zinc from EAF Dust by Sulfuric Acid |
| Authors |
박수지(Su Ji Park); 손인준(In Joon Son); 손호상(Ho Sang Sohn) |
| DOI |
https://doi.org/10.3365/KJMM.2015.53.11.793 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
EAF dust; hydrometallurgy; sulfuric acid; leaching; zinc; kinetic |
| Abstract |
The sulfuric acid leaching of electric arc furnace(EAF) dust was studied in an attempt to find a suitable hydrometallurgical method for the recovery of zinc. The effect of acid concentration, reaction temperature, stirring rate and solid-to-liquid ratio on Zn and Fe extraction from the solution was investigated. It was found that the leaching rate of Zn and Fe increased with increasing reaction temperature and sulfuric-acid concentration. Examination of data using a shrinking core model suggest that the leaching rate is controlled by mixture kinetics. The activation energy for the leaching reaction of Zn and Fe were calculated as 44.45 kJ/mol and 65.45 kJ/mol, respectively. |