Hui-gang Wang, Yang Li, Jian-ming Gao, Mei Zhang, and Min Guo, A novel hydrothermal method for zinc extraction and separation from zinc ferrite and electric arc furnace dust, Int. J. Miner. Metall. Mater., 23(2016), No. 2, pp. 146-155. https://doi.org/10.1007/s12613-016-1221-4
Cite this article as:
Hui-gang Wang, Yang Li, Jian-ming Gao, Mei Zhang, and Min Guo, A novel hydrothermal method for zinc extraction and separation from zinc ferrite and electric arc furnace dust, Int. J. Miner. Metall. Mater., 23(2016), No. 2, pp. 146-155. https://doi.org/10.1007/s12613-016-1221-4
Hui-gang Wang, Yang Li, Jian-ming Gao, Mei Zhang, and Min Guo, A novel hydrothermal method for zinc extraction and separation from zinc ferrite and electric arc furnace dust, Int. J. Miner. Metall. Mater., 23(2016), No. 2, pp. 146-155. https://doi.org/10.1007/s12613-016-1221-4
Citation:
Hui-gang Wang, Yang Li, Jian-ming Gao, Mei Zhang, and Min Guo, A novel hydrothermal method for zinc extraction and separation from zinc ferrite and electric arc furnace dust, Int. J. Miner. Metall. Mater., 23(2016), No. 2, pp. 146-155. https://doi.org/10.1007/s12613-016-1221-4
Beijing Key Laboratory of Green Recycling and Extraction of Metals, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
A novel hydrothermal process was developed to extract zinc from pure zinc ferrite (ZnFe2O4) nanopowder and zinc-containing electric arc furnace (EAF) dust using hexahydrated ferric chloride (FeCl3·6H2O) as a decomposing agent. The effects of solid FeCl3·6H2O to ZnFe2O4 ratio by mass (RF/Z), hydrothermal reaction temperature, and time on zinc extraction were systematically investigated. In the results, when the hydrothermal reaction is conducted at 150℃ for 2 h with RF/Z of 15:20, the efficiency of zinc extraction from ZnFe2O4 reaches 97.2%, and the concentration of ferric ions (Fe3+) in the leaching solution is nearly zero, indicating a high selectivity for zinc. In addition, the zinc extraction efficiency from the EAF dust reaches 94.5% in the case of the hydrothermal reaction performed at 200℃ for 10 h with the solid FeCl3·6H2O to EAF dust ratio by mass (RF/EAF dust) of 15:10. Zinc and iron separation is achieved by adjusting the pH value of the leaching solution according to the different precipitation pH values of metal hydroxides.
Beijing Key Laboratory of Green Recycling and Extraction of Metals, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
A novel hydrothermal process was developed to extract zinc from pure zinc ferrite (ZnFe2O4) nanopowder and zinc-containing electric arc furnace (EAF) dust using hexahydrated ferric chloride (FeCl3·6H2O) as a decomposing agent. The effects of solid FeCl3·6H2O to ZnFe2O4 ratio by mass (RF/Z), hydrothermal reaction temperature, and time on zinc extraction were systematically investigated. In the results, when the hydrothermal reaction is conducted at 150℃ for 2 h with RF/Z of 15:20, the efficiency of zinc extraction from ZnFe2O4 reaches 97.2%, and the concentration of ferric ions (Fe3+) in the leaching solution is nearly zero, indicating a high selectivity for zinc. In addition, the zinc extraction efficiency from the EAF dust reaches 94.5% in the case of the hydrothermal reaction performed at 200℃ for 10 h with the solid FeCl3·6H2O to EAF dust ratio by mass (RF/EAF dust) of 15:10. Zinc and iron separation is achieved by adjusting the pH value of the leaching solution according to the different precipitation pH values of metal hydroxides.
下载: